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Finding the Fourth Proportional to 978,290.70, 1,467,436.05 and 710,601.90

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Solution

The fourth proportional to 978,290.70, 1,467,436.05 and 710,601.90 is: 1,065,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,290.70 : 1,467,436.05 = 710,601.90 : x
  2. Step 2: Convert to fraction form
    978,290.70/1,467,436.05 = 710,601.90/x
  3. Step 3: Cross multiply
    978,290.70x = 1,467,436.05 × 710,601.90
  4. Step 4: Simplify right side
    978,290.70x = 1,042,762,845,258.50
  5. Step 5: Solve for x
    x = 1,042,762,845,258.50/978,290.70
  6. Step 6: Final answer
    x = 1,065,902.85

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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.