Home / 717,462.49-990,098.18-395,172.57

Finding the Fourth Proportional to 717,462.49, 990,098.18 and 395,172.57

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Solution

The fourth proportional to 717,462.49, 990,098.18 and 395,172.57 is: 545,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,462.49 : 990,098.18 = 395,172.57 : x
  2. Step 2: Convert to fraction form
    717,462.49/990,098.18 = 395,172.57/x
  3. Step 3: Cross multiply
    717,462.49x = 990,098.18 × 395,172.57
  4. Step 4: Simplify right side
    717,462.49x = 391,259,647,784.67
  5. Step 5: Solve for x
    x = 391,259,647,784.67/717,462.49
  6. Step 6: Final answer
    x = 545,338.13

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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.