Home / 820,625.10-1,230,246.45-426,641.10

Finding the Fourth Proportional to 820,625.10, 1,230,246.45 and 426,641.10

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Solution

The fourth proportional to 820,625.10, 1,230,246.45 and 426,641.10 is: 639,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,625.10 : 1,230,246.45 = 426,641.10 : x
  2. Step 2: Convert to fraction form
    820,625.10/1,230,246.45 = 426,641.10/x
  3. Step 3: Cross multiply
    820,625.10x = 1,230,246.45 × 426,641.10
  4. Step 4: Simplify right side
    820,625.10x = 524,873,698,699.10
  5. Step 5: Solve for x
    x = 524,873,698,699.10/820,625.10
  6. Step 6: Final answer
    x = 639,602.30

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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.