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Finding the Fourth Proportional to 606,915.20, 910,372.80 and 291,209.60

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Solution

The fourth proportional to 606,915.20, 910,372.80 and 291,209.60 is: 436,814.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,915.20 : 910,372.80 = 291,209.60 : x
  2. Step 2: Convert to fraction form
    606,915.20/910,372.80 = 291,209.60/x
  3. Step 3: Cross multiply
    606,915.20x = 910,372.80 × 291,209.60
  4. Step 4: Simplify right side
    606,915.20x = 265,109,298,938.88
  5. Step 5: Solve for x
    x = 265,109,298,938.88/606,915.20
  6. Step 6: Final answer
    x = 436,814.40

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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.