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Finding the Fourth Proportional to 491,253.60, 736,102.80 and 411,938.40

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Solution

The fourth proportional to 491,253.60, 736,102.80 and 411,938.40 is: 617,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,253.60 : 736,102.80 = 411,938.40 : x
  2. Step 2: Convert to fraction form
    491,253.60/736,102.80 = 411,938.40/x
  3. Step 3: Cross multiply
    491,253.60x = 736,102.80 × 411,938.40
  4. Step 4: Simplify right side
    491,253.60x = 303,229,009,667.52
  5. Step 5: Solve for x
    x = 303,229,009,667.52/491,253.60
  6. Step 6: Final answer
    x = 617,255.55

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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.