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Finding the Fourth Proportional to 618,032.80, 926,818.80 and 243,978.40

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Solution

The fourth proportional to 618,032.80, 926,818.80 and 243,978.40 is: 365,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,032.80 : 926,818.80 = 243,978.40 : x
  2. Step 2: Convert to fraction form
    618,032.80/926,818.80 = 243,978.40/x
  3. Step 3: Cross multiply
    618,032.80x = 926,818.80 × 243,978.40
  4. Step 4: Simplify right side
    618,032.80x = 226,123,767,913.92
  5. Step 5: Solve for x
    x = 226,123,767,913.92/618,032.80
  6. Step 6: Final answer
    x = 365,876.65

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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.