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Finding the Fourth Proportional to 708,672.70, 1,063,009.05 and 288,250.30

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Solution

The fourth proportional to 708,672.70, 1,063,009.05 and 288,250.30 is: 432,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,672.70 : 1,063,009.05 = 288,250.30 : x
  2. Step 2: Convert to fraction form
    708,672.70/1,063,009.05 = 288,250.30/x
  3. Step 3: Cross multiply
    708,672.70x = 1,063,009.05 × 288,250.30
  4. Step 4: Simplify right side
    708,672.70x = 306,412,677,565.22
  5. Step 5: Solve for x
    x = 306,412,677,565.22/708,672.70
  6. Step 6: Final answer
    x = 432,375.45

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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.