Home / 708,645.28-1,063,410.78-287,921.17

Finding the Fourth Proportional to 708,645.28, 1,063,410.78 and 287,921.17

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Solution

The fourth proportional to 708,645.28, 1,063,410.78 and 287,921.17 is: 432,061.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,645.28 : 1,063,410.78 = 287,921.17 : x
  2. Step 2: Convert to fraction form
    708,645.28/1,063,410.78 = 287,921.17/x
  3. Step 3: Cross multiply
    708,645.28x = 1,063,410.78 × 287,921.17
  4. Step 4: Simplify right side
    708,645.28x = 306,178,475,968.21
  5. Step 5: Solve for x
    x = 306,178,475,968.21/708,645.28
  6. Step 6: Final answer
    x = 432,061.69

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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.