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Finding the Fourth Proportional to 610,655.50, 842,704.95 and 372,191.50

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Solution

The fourth proportional to 610,655.50, 842,704.95 and 372,191.50 is: 513,624.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,655.50 : 842,704.95 = 372,191.50 : x
  2. Step 2: Convert to fraction form
    610,655.50/842,704.95 = 372,191.50/x
  3. Step 3: Cross multiply
    610,655.50x = 842,704.95 × 372,191.50
  4. Step 4: Simplify right side
    610,655.50x = 313,647,619,397.93
  5. Step 5: Solve for x
    x = 313,647,619,397.93/610,655.50
  6. Step 6: Final answer
    x = 513,624.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.