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Finding the Fourth Proportional to 491,179.30, 736,768.95 and 432,130.30

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Solution

The fourth proportional to 491,179.30, 736,768.95 and 432,130.30 is: 648,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,179.30 : 736,768.95 = 432,130.30 : x
  2. Step 2: Convert to fraction form
    491,179.30/736,768.95 = 432,130.30/x
  3. Step 3: Cross multiply
    491,179.30x = 736,768.95 × 432,130.30
  4. Step 4: Simplify right side
    491,179.30x = 318,380,187,394.19
  5. Step 5: Solve for x
    x = 318,380,187,394.19/491,179.30
  6. Step 6: Final answer
    x = 648,195.45

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Double scale
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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.