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Finding the Fourth Proportional to 766,505.70, 1,149,758.55 and 708,768.90

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Solution

The fourth proportional to 766,505.70, 1,149,758.55 and 708,768.90 is: 1,063,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,505.70 : 1,149,758.55 = 708,768.90 : x
  2. Step 2: Convert to fraction form
    766,505.70/1,149,758.55 = 708,768.90/x
  3. Step 3: Cross multiply
    766,505.70x = 1,149,758.55 × 708,768.90
  4. Step 4: Simplify right side
    766,505.70x = 814,913,102,749.10
  5. Step 5: Solve for x
    x = 814,913,102,749.10/766,505.70
  6. Step 6: Final answer
    x = 1,063,153.35

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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.