Home / 880,590.80-1,320,011.40-430,943.60

Finding the Fourth Proportional to 880,590.80, 1,320,011.40 and 430,943.60

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Solution

The fourth proportional to 880,590.80, 1,320,011.40 and 430,943.60 is: 645,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,590.80 : 1,320,011.40 = 430,943.60 : x
  2. Step 2: Convert to fraction form
    880,590.80/1,320,011.40 = 430,943.60/x
  3. Step 3: Cross multiply
    880,590.80x = 1,320,011.40 × 430,943.60
  4. Step 4: Simplify right side
    880,590.80x = 568,850,464,757.04
  5. Step 5: Solve for x
    x = 568,850,464,757.04/880,590.80
  6. Step 6: Final answer
    x = 645,987.29

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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.