Home / 747,775.70-1,121,663.55-666,905.30

Finding the Fourth Proportional to 747,775.70, 1,121,663.55 and 666,905.30

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Solution

The fourth proportional to 747,775.70, 1,121,663.55 and 666,905.30 is: 1,000,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,775.70 : 1,121,663.55 = 666,905.30 : x
  2. Step 2: Convert to fraction form
    747,775.70/1,121,663.55 = 666,905.30/x
  3. Step 3: Cross multiply
    747,775.70x = 1,121,663.55 × 666,905.30
  4. Step 4: Simplify right side
    747,775.70x = 748,043,366,311.82
  5. Step 5: Solve for x
    x = 748,043,366,311.82/747,775.70
  6. Step 6: Final answer
    x = 1,000,357.95

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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.