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Finding the Fourth Proportional to 487,745.10, 731,617.65 and 487,745.10

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Solution

The fourth proportional to 487,745.10, 731,617.65 and 487,745.10 is: 731,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,745.10 : 731,617.65 = 487,745.10 : x
  2. Step 2: Convert to fraction form
    487,745.10/731,617.65 = 487,745.10/x
  3. Step 3: Cross multiply
    487,745.10x = 731,617.65 × 487,745.10
  4. Step 4: Simplify right side
    487,745.10x = 356,842,923,861.02
  5. Step 5: Solve for x
    x = 356,842,923,861.02/487,745.10
  6. Step 6: Final answer
    x = 731,617.65

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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.