Home / 708,080.25-977,138.43-385,792.68

Finding the Fourth Proportional to 708,080.25, 977,138.43 and 385,792.68

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Solution

The fourth proportional to 708,080.25, 977,138.43 and 385,792.68 is: 532,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,080.25 : 977,138.43 = 385,792.68 : x
  2. Step 2: Convert to fraction form
    708,080.25/977,138.43 = 385,792.68/x
  3. Step 3: Cross multiply
    708,080.25x = 977,138.43 × 385,792.68
  4. Step 4: Simplify right side
    708,080.25x = 376,972,853,640.69
  5. Step 5: Solve for x
    x = 376,972,853,640.69/708,080.25
  6. Step 6: Final answer
    x = 532,387.19

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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.