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Finding the Fourth Proportional to 512,331.40, 767,114.70 and 512,331.40

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Solution

The fourth proportional to 512,331.40, 767,114.70 and 512,331.40 is: 767,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,331.40 : 767,114.70 = 512,331.40 : x
  2. Step 2: Convert to fraction form
    512,331.40/767,114.70 = 512,331.40/x
  3. Step 3: Cross multiply
    512,331.40x = 767,114.70 × 512,331.40
  4. Step 4: Simplify right side
    512,331.40x = 393,016,948,211.58
  5. Step 5: Solve for x
    x = 393,016,948,211.58/512,331.40
  6. Step 6: Final answer
    x = 767,114.70

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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.