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Finding the Fourth Proportional to 579,729.40, 868,211.70 and 579,729.40

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Solution

The fourth proportional to 579,729.40, 868,211.70 and 579,729.40 is: 868,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,729.40 : 868,211.70 = 579,729.40 : x
  2. Step 2: Convert to fraction form
    579,729.40/868,211.70 = 579,729.40/x
  3. Step 3: Cross multiply
    579,729.40x = 868,211.70 × 579,729.40
  4. Step 4: Simplify right side
    579,729.40x = 503,327,847,913.98
  5. Step 5: Solve for x
    x = 503,327,847,913.98/579,729.40
  6. Step 6: Final answer
    x = 868,211.70

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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.