Home / 783,721.28-1,081,653.52-477,975.12

Finding the Fourth Proportional to 783,721.28, 1,081,653.52 and 477,975.12

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Solution

The fourth proportional to 783,721.28, 1,081,653.52 and 477,975.12 is: 659,677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,721.28 : 1,081,653.52 = 477,975.12 : x
  2. Step 2: Convert to fraction form
    783,721.28/1,081,653.52 = 477,975.12/x
  3. Step 3: Cross multiply
    783,721.28x = 1,081,653.52 × 477,975.12
  4. Step 4: Simplify right side
    783,721.28x = 517,003,471,020.42
  5. Step 5: Solve for x
    x = 517,003,471,020.42/783,721.28
  6. Step 6: Final answer
    x = 659,677.72

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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.