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Finding the Fourth Proportional to 437,907.20, 656,860.80 and 432,002.30

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Solution

The fourth proportional to 437,907.20, 656,860.80 and 432,002.30 is: 648,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,907.20 : 656,860.80 = 432,002.30 : x
  2. Step 2: Convert to fraction form
    437,907.20/656,860.80 = 432,002.30/x
  3. Step 3: Cross multiply
    437,907.20x = 656,860.80 × 432,002.30
  4. Step 4: Simplify right side
    437,907.20x = 283,765,376,379.84
  5. Step 5: Solve for x
    x = 283,765,376,379.84/437,907.20
  6. Step 6: Final answer
    x = 648,003.45

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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.