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Finding the Fourth Proportional to 437,646.80, 656,470.20 and 409,653.20

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Solution

The fourth proportional to 437,646.80, 656,470.20 and 409,653.20 is: 614,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,646.80 : 656,470.20 = 409,653.20 : x
  2. Step 2: Convert to fraction form
    437,646.80/656,470.20 = 409,653.20/x
  3. Step 3: Cross multiply
    437,646.80x = 656,470.20 × 409,653.20
  4. Step 4: Simplify right side
    437,646.80x = 268,925,118,134.64
  5. Step 5: Solve for x
    x = 268,925,118,134.64/437,646.80
  6. Step 6: Final answer
    x = 614,479.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.