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Finding the Fourth Proportional to 1,295,957.28, 1,788,396 and 715,235.04

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Solution

The fourth proportional to 1,295,957.28, 1,788,396 and 715,235.04 is: 987,010.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,957.28 : 1,788,396 = 715,235.04 : x
  2. Step 2: Convert to fraction form
    1,295,957.28/1,788,396 = 715,235.04/x
  3. Step 3: Cross multiply
    1,295,957.28x = 1,788,396 × 715,235.04
  4. Step 4: Simplify right side
    1,295,957.28x = 1,279,123,484,595.84
  5. Step 5: Solve for x
    x = 1,279,123,484,595.84/1,295,957.28
  6. Step 6: Final answer
    x = 987,010.53

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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.