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Finding the Fourth Proportional to 616,813.44, 851,437.44 and 402,005.76

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Solution

The fourth proportional to 616,813.44, 851,437.44 and 402,005.76 is: 554,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,813.44 : 851,437.44 = 402,005.76 : x
  2. Step 2: Convert to fraction form
    616,813.44/851,437.44 = 402,005.76/x
  3. Step 3: Cross multiply
    616,813.44x = 851,437.44 × 402,005.76
  4. Step 4: Simplify right side
    616,813.44x = 342,282,755,159.65
  5. Step 5: Solve for x
    x = 342,282,755,159.65/616,813.44
  6. Step 6: Final answer
    x = 554,921.04

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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.