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Finding the Fourth Proportional to 453,807.80, 680,711.70 and 442,143.80

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Solution

The fourth proportional to 453,807.80, 680,711.70 and 442,143.80 is: 663,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,807.80 : 680,711.70 = 442,143.80 : x
  2. Step 2: Convert to fraction form
    453,807.80/680,711.70 = 442,143.80/x
  3. Step 3: Cross multiply
    453,807.80x = 680,711.70 × 442,143.80
  4. Step 4: Simplify right side
    453,807.80x = 300,972,457,742.46
  5. Step 5: Solve for x
    x = 300,972,457,742.46/453,807.80
  6. Step 6: Final answer
    x = 663,215.70

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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.