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Finding the Fourth Proportional to 717,854.54, 990,630.97 and 407,754.97

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Solution

The fourth proportional to 717,854.54, 990,630.97 and 407,754.97 is: 562,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,854.54 : 990,630.97 = 407,754.97 : x
  2. Step 2: Convert to fraction form
    717,854.54/990,630.97 = 407,754.97/x
  3. Step 3: Cross multiply
    717,854.54x = 990,630.97 × 407,754.97
  4. Step 4: Simplify right side
    717,854.54x = 403,934,697,957.46
  5. Step 5: Solve for x
    x = 403,934,697,957.46/717,854.54
  6. Step 6: Final answer
    x = 562,697.15

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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.