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Finding the Fourth Proportional to 972,688.80, 1,458,687.60 and 440,464.80

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Solution

The fourth proportional to 972,688.80, 1,458,687.60 and 440,464.80 is: 660,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,688.80 : 1,458,687.60 = 440,464.80 : x
  2. Step 2: Convert to fraction form
    972,688.80/1,458,687.60 = 440,464.80/x
  3. Step 3: Cross multiply
    972,688.80x = 1,458,687.60 × 440,464.80
  4. Step 4: Simplify right side
    972,688.80x = 642,500,541,996.48
  5. Step 5: Solve for x
    x = 642,500,541,996.48/972,688.80
  6. Step 6: Final answer
    x = 660,540.70

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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.