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Finding the Fourth Proportional to 611,888.88, 916,502.40 and 295,680

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Solution

The fourth proportional to 611,888.88, 916,502.40 and 295,680 is: 442,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,888.88 : 916,502.40 = 295,680 : x
  2. Step 2: Convert to fraction form
    611,888.88/916,502.40 = 295,680/x
  3. Step 3: Cross multiply
    611,888.88x = 916,502.40 × 295,680
  4. Step 4: Simplify right side
    611,888.88x = 270,991,429,632
  5. Step 5: Solve for x
    x = 270,991,429,632/611,888.88
  6. Step 6: Final answer
    x = 442,876.87

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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.