Home / 1,432,320.64-1,976,564.16-787,806.72

Finding the Fourth Proportional to 1,432,320.64, 1,976,564.16 and 787,806.72

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Solution

The fourth proportional to 1,432,320.64, 1,976,564.16 and 787,806.72 is: 1,087,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,320.64 : 1,976,564.16 = 787,806.72 : x
  2. Step 2: Convert to fraction form
    1,432,320.64/1,976,564.16 = 787,806.72/x
  3. Step 3: Cross multiply
    1,432,320.64x = 1,976,564.16 × 787,806.72
  4. Step 4: Simplify right side
    1,432,320.64x = 1,557,150,527,759.16
  5. Step 5: Solve for x
    x = 1,557,150,527,759.16/1,432,320.64
  6. Step 6: Final answer
    x = 1,087,152.20

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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.