Home / 764,572.25-1,146,887.54-390,157.85

Finding the Fourth Proportional to 764,572.25, 1,146,887.54 and 390,157.85

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Solution

The fourth proportional to 764,572.25, 1,146,887.54 and 390,157.85 is: 585,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,572.25 : 1,146,887.54 = 390,157.85 : x
  2. Step 2: Convert to fraction form
    764,572.25/1,146,887.54 = 390,157.85/x
  3. Step 3: Cross multiply
    764,572.25x = 1,146,887.54 × 390,157.85
  4. Step 4: Simplify right side
    764,572.25x = 447,467,179,177.71
  5. Step 5: Solve for x
    x = 447,467,179,177.71/764,572.25
  6. Step 6: Final answer
    x = 585,251.66

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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.