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Finding the Fourth Proportional to 707,200.40, 1,059,245.40 and 691,648.40

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Solution

The fourth proportional to 707,200.40, 1,059,245.40 and 691,648.40 is: 1,035,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,200.40 : 1,059,245.40 = 691,648.40 : x
  2. Step 2: Convert to fraction form
    707,200.40/1,059,245.40 = 691,648.40/x
  3. Step 3: Cross multiply
    707,200.40x = 1,059,245.40 × 691,648.40
  4. Step 4: Simplify right side
    707,200.40x = 732,625,386,117.36
  5. Step 5: Solve for x
    x = 732,625,386,117.36/707,200.40
  6. Step 6: Final answer
    x = 1,035,951.60

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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.