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Finding the Fourth Proportional to 437,999.90, 656,999.85 and 288,409.10

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Solution

The fourth proportional to 437,999.90, 656,999.85 and 288,409.10 is: 432,613.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,999.90 : 656,999.85 = 288,409.10 : x
  2. Step 2: Convert to fraction form
    437,999.90/656,999.85 = 288,409.10/x
  3. Step 3: Cross multiply
    437,999.90x = 656,999.85 × 288,409.10
  4. Step 4: Simplify right side
    437,999.90x = 189,484,735,438.64
  5. Step 5: Solve for x
    x = 189,484,735,438.64/437,999.90
  6. Step 6: Final answer
    x = 432,613.65

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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.