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Finding the Fourth Proportional to 437,548.80, 656,323.20 and 418,886.40

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Solution

The fourth proportional to 437,548.80, 656,323.20 and 418,886.40 is: 628,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,548.80 : 656,323.20 = 418,886.40 : x
  2. Step 2: Convert to fraction form
    437,548.80/656,323.20 = 418,886.40/x
  3. Step 3: Cross multiply
    437,548.80x = 656,323.20 × 418,886.40
  4. Step 4: Simplify right side
    437,548.80x = 274,924,862,484.48
  5. Step 5: Solve for x
    x = 274,924,862,484.48/437,548.80
  6. Step 6: Final answer
    x = 628,329.60

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Similar ratio
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1.5x scale

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.