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Finding the Fourth Proportional to 497,245.20, 745,867.80 and 418,513.20

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Solution

The fourth proportional to 497,245.20, 745,867.80 and 418,513.20 is: 627,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,245.20 : 745,867.80 = 418,513.20 : x
  2. Step 2: Convert to fraction form
    497,245.20/745,867.80 = 418,513.20/x
  3. Step 3: Cross multiply
    497,245.20x = 745,867.80 × 418,513.20
  4. Step 4: Simplify right side
    497,245.20x = 312,155,519,754.96
  5. Step 5: Solve for x
    x = 312,155,519,754.96/497,245.20
  6. Step 6: Final answer
    x = 627,769.80

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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.