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Finding the Fourth Proportional to 875,141.98, 1,312,187.88 and 342,027.92

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Solution

The fourth proportional to 875,141.98, 1,312,187.88 and 342,027.92 is: 512,836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,141.98 : 1,312,187.88 = 342,027.92 : x
  2. Step 2: Convert to fraction form
    875,141.98/1,312,187.88 = 342,027.92/x
  3. Step 3: Cross multiply
    875,141.98x = 1,312,187.88 × 342,027.92
  4. Step 4: Simplify right side
    875,141.98x = 448,804,891,245.61
  5. Step 5: Solve for x
    x = 448,804,891,245.61/875,141.98
  6. Step 6: Final answer
    x = 512,836.66

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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.