Home / 730,665.82-1,008,287.13-399,515.70

Finding the Fourth Proportional to 730,665.82, 1,008,287.13 and 399,515.70

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Solution

The fourth proportional to 730,665.82, 1,008,287.13 and 399,515.70 is: 551,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,665.82 : 1,008,287.13 = 399,515.70 : x
  2. Step 2: Convert to fraction form
    730,665.82/1,008,287.13 = 399,515.70/x
  3. Step 3: Cross multiply
    730,665.82x = 1,008,287.13 × 399,515.70
  4. Step 4: Simplify right side
    730,665.82x = 402,826,538,542.94
  5. Step 5: Solve for x
    x = 402,826,538,542.94/730,665.82
  6. Step 6: Final answer
    x = 551,314.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.