Home / 915,452.80-1,371,915.20-660,702.40

Finding the Fourth Proportional to 915,452.80, 1,371,915.20 and 660,702.40

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Solution

The fourth proportional to 915,452.80, 1,371,915.20 and 660,702.40 is: 990,141.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,452.80 : 1,371,915.20 = 660,702.40 : x
  2. Step 2: Convert to fraction form
    915,452.80/1,371,915.20 = 660,702.40/x
  3. Step 3: Cross multiply
    915,452.80x = 1,371,915.20 × 660,702.40
  4. Step 4: Simplify right side
    915,452.80x = 906,427,665,236.48
  5. Step 5: Solve for x
    x = 906,427,665,236.48/915,452.80
  6. Step 6: Final answer
    x = 990,141.34

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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.