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Finding the Fourth Proportional to 715,866.75, 987,084.50 and 457,402.23

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Solution

The fourth proportional to 715,866.75, 987,084.50 and 457,402.23 is: 630,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,866.75 : 987,084.50 = 457,402.23 : x
  2. Step 2: Convert to fraction form
    715,866.75/987,084.50 = 457,402.23/x
  3. Step 3: Cross multiply
    715,866.75x = 987,084.50 × 457,402.23
  4. Step 4: Simplify right side
    715,866.75x = 451,494,649,211.42
  5. Step 5: Solve for x
    x = 451,494,649,211.42/715,866.75
  6. Step 6: Final answer
    x = 630,696.49

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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.