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Finding the Fourth Proportional to 574,200.90, 861,301.35 and 345,878.10

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Solution

The fourth proportional to 574,200.90, 861,301.35 and 345,878.10 is: 518,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,200.90 : 861,301.35 = 345,878.10 : x
  2. Step 2: Convert to fraction form
    574,200.90/861,301.35 = 345,878.10/x
  3. Step 3: Cross multiply
    574,200.90x = 861,301.35 × 345,878.10
  4. Step 4: Simplify right side
    574,200.90x = 297,905,274,465.44
  5. Step 5: Solve for x
    x = 297,905,274,465.44/574,200.90
  6. Step 6: Final answer
    x = 518,817.15

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Similar ratio
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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.