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Finding the Fourth Proportional to 720,663.87, 994,468.75 and 414,690.87

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Solution

The fourth proportional to 720,663.87, 994,468.75 and 414,690.87 is: 572,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,663.87 : 994,468.75 = 414,690.87 : x
  2. Step 2: Convert to fraction form
    720,663.87/994,468.75 = 414,690.87/x
  3. Step 3: Cross multiply
    720,663.87x = 994,468.75 × 414,690.87
  4. Step 4: Simplify right side
    720,663.87x = 412,397,105,718.60
  5. Step 5: Solve for x
    x = 412,397,105,718.60/720,663.87
  6. Step 6: Final answer
    x = 572,246.12

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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.