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Finding the Fourth Proportional to 452,909.20, 679,363.80 and 403,920.40

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Solution

The fourth proportional to 452,909.20, 679,363.80 and 403,920.40 is: 605,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,909.20 : 679,363.80 = 403,920.40 : x
  2. Step 2: Convert to fraction form
    452,909.20/679,363.80 = 403,920.40/x
  3. Step 3: Cross multiply
    452,909.20x = 679,363.80 × 403,920.40
  4. Step 4: Simplify right side
    452,909.20x = 274,408,897,841.52
  5. Step 5: Solve for x
    x = 274,408,897,841.52/452,909.20
  6. Step 6: Final answer
    x = 605,880.60

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Double scale
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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.