Home / 717,530.91-990,188.06-395,233.53

Finding the Fourth Proportional to 717,530.91, 990,188.06 and 395,233.53

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Solution

The fourth proportional to 717,530.91, 990,188.06 and 395,233.53 is: 545,419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,530.91 : 990,188.06 = 395,233.53 : x
  2. Step 2: Convert to fraction form
    717,530.91/990,188.06 = 395,233.53/x
  3. Step 3: Cross multiply
    717,530.91x = 990,188.06 × 395,233.53
  4. Step 4: Simplify right side
    717,530.91x = 391,355,520,341.48
  5. Step 5: Solve for x
    x = 391,355,520,341.48/717,530.91
  6. Step 6: Final answer
    x = 545,419.74

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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.