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Finding the Fourth Proportional to 717,516, 990,172.08 and 415,884.96

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Solution

The fourth proportional to 717,516, 990,172.08 and 415,884.96 is: 573,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,516 : 990,172.08 = 415,884.96 : x
  2. Step 2: Convert to fraction form
    717,516/990,172.08 = 415,884.96/x
  3. Step 3: Cross multiply
    717,516x = 990,172.08 × 415,884.96
  4. Step 4: Simplify right side
    717,516x = 411,797,675,883.92
  5. Step 5: Solve for x
    x = 411,797,675,883.92/717,516
  6. Step 6: Final answer
    x = 573,921.24

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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.