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Finding the Fourth Proportional to 603,312.30, 905,227.65 and 307,824.30

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Solution

The fourth proportional to 603,312.30, 905,227.65 and 307,824.30 is: 461,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,312.30 : 905,227.65 = 307,824.30 : x
  2. Step 2: Convert to fraction form
    603,312.30/905,227.65 = 307,824.30/x
  3. Step 3: Cross multiply
    603,312.30x = 905,227.65 × 307,824.30
  4. Step 4: Simplify right side
    603,312.30x = 278,651,067,701.90
  5. Step 5: Solve for x
    x = 278,651,067,701.90/603,312.30
  6. Step 6: Final answer
    x = 461,868.70

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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.