Home / 749,425.30-1,121,805.15-432,942.10

Finding the Fourth Proportional to 749,425.30, 1,121,805.15 and 432,942.10

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Solution

The fourth proportional to 749,425.30, 1,121,805.15 and 432,942.10 is: 648,065.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,425.30 : 1,121,805.15 = 432,942.10 : x
  2. Step 2: Convert to fraction form
    749,425.30/1,121,805.15 = 432,942.10/x
  3. Step 3: Cross multiply
    749,425.30x = 1,121,805.15 × 432,942.10
  4. Step 4: Simplify right side
    749,425.30x = 485,676,677,431.82
  5. Step 5: Solve for x
    x = 485,676,677,431.82/749,425.30
  6. Step 6: Final answer
    x = 648,065.49

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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.