Home / 672,948,219.70-1,009,422,329.55-284,641,995.70

Finding the Fourth Proportional to 672,948,219.70, 1,009,422,329.55 and 284,641,995.70

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Solution

The fourth proportional to 672,948,219.70, 1,009,422,329.55 and 284,641,995.70 is: 426,962,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,948,219.70 : 1,009,422,329.55 = 284,641,995.70 : x
  2. Step 2: Convert to fraction form
    672,948,219.70/1,009,422,329.55 = 284,641,995.70/x
  3. Step 3: Cross multiply
    672,948,219.70x = 1,009,422,329.55 × 284,641,995.70
  4. Step 4: Simplify right side
    672,948,219.70x = 287,323,986,387,255,072
  5. Step 5: Solve for x
    x = 287,323,986,387,255,072/672,948,219.70
  6. Step 6: Final answer
    x = 426,962,993.55

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Half scale
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Double scale
Find fourth proportional to 672,948,220.70, 1,009,422,331.05 and 284,641,996.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.