Home / 730,661.90-1,008,281.70-399,511.76

Finding the Fourth Proportional to 730,661.90, 1,008,281.70 and 399,511.76

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Solution

The fourth proportional to 730,661.90, 1,008,281.70 and 399,511.76 is: 551,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,661.90 : 1,008,281.70 = 399,511.76 : x
  2. Step 2: Convert to fraction form
    730,661.90/1,008,281.70 = 399,511.76/x
  3. Step 3: Cross multiply
    730,661.90x = 1,008,281.70 × 399,511.76
  4. Step 4: Simplify right side
    730,661.90x = 402,820,396,542.79
  5. Step 5: Solve for x
    x = 402,820,396,542.79/730,661.90
  6. Step 6: Final answer
    x = 551,308.88

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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.