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Finding the Fourth Proportional to 508,803.70, 762,307.42 and 308,717.78

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Solution

The fourth proportional to 508,803.70, 762,307.42 and 308,717.78 is: 462,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,803.70 : 762,307.42 = 308,717.78 : x
  2. Step 2: Convert to fraction form
    508,803.70/762,307.42 = 308,717.78/x
  3. Step 3: Cross multiply
    508,803.70x = 762,307.42 × 308,717.78
  4. Step 4: Simplify right side
    508,803.70x = 235,337,854,379.93
  5. Step 5: Solve for x
    x = 235,337,854,379.93/508,803.70
  6. Step 6: Final answer
    x = 462,531.73

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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.