Home / 1,071,278.64-1,479,057.06-663,812.88

Finding the Fourth Proportional to 1,071,278.64, 1,479,057.06 and 663,812.88

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Solution

The fourth proportional to 1,071,278.64, 1,479,057.06 and 663,812.88 is: 916,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,278.64 : 1,479,057.06 = 663,812.88 : x
  2. Step 2: Convert to fraction form
    1,071,278.64/1,479,057.06 = 663,812.88/x
  3. Step 3: Cross multiply
    1,071,278.64x = 1,479,057.06 × 663,812.88
  4. Step 4: Simplify right side
    1,071,278.64x = 981,817,126,682.93
  5. Step 5: Solve for x
    x = 981,817,126,682.93/1,071,278.64
  6. Step 6: Final answer
    x = 916,490.90

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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.