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Finding the Fourth Proportional to 878,862.60, 1,317,702.06 and 317,824.20

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Solution

The fourth proportional to 878,862.60, 1,317,702.06 and 317,824.20 is: 476,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,862.60 : 1,317,702.06 = 317,824.20 : x
  2. Step 2: Convert to fraction form
    878,862.60/1,317,702.06 = 317,824.20/x
  3. Step 3: Cross multiply
    878,862.60x = 1,317,702.06 × 317,824.20
  4. Step 4: Simplify right side
    878,862.60x = 418,797,603,057.85
  5. Step 5: Solve for x
    x = 418,797,603,057.85/878,862.60
  6. Step 6: Final answer
    x = 476,522.27

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1.5x scale

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.