Home / 669,778.70-1,002,918.45-638,285.90

Finding the Fourth Proportional to 669,778.70, 1,002,918.45 and 638,285.90

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Solution

The fourth proportional to 669,778.70, 1,002,918.45 and 638,285.90 is: 955,761.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,778.70 : 1,002,918.45 = 638,285.90 : x
  2. Step 2: Convert to fraction form
    669,778.70/1,002,918.45 = 638,285.90/x
  3. Step 3: Cross multiply
    669,778.70x = 1,002,918.45 × 638,285.90
  4. Step 4: Simplify right side
    669,778.70x = 640,148,705,484.86
  5. Step 5: Solve for x
    x = 640,148,705,484.86/669,778.70
  6. Step 6: Final answer
    x = 955,761.52

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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.