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Finding the Fourth Proportional to 611,937.80, 917,589.90 and 274,688.04

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Solution

The fourth proportional to 611,937.80, 917,589.90 and 274,688.04 is: 411,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,937.80 : 917,589.90 = 274,688.04 : x
  2. Step 2: Convert to fraction form
    611,937.80/917,589.90 = 274,688.04/x
  3. Step 3: Cross multiply
    611,937.80x = 917,589.90 × 274,688.04
  4. Step 4: Simplify right side
    611,937.80x = 252,050,971,154.80
  5. Step 5: Solve for x
    x = 252,050,971,154.80/611,937.80
  6. Step 6: Final answer
    x = 411,889.85

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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.