Home / 1,148,431.28-1,584,819.76-639,133.52

Finding the Fourth Proportional to 1,148,431.28, 1,584,819.76 and 639,133.52

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Solution

The fourth proportional to 1,148,431.28, 1,584,819.76 and 639,133.52 is: 881,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,431.28 : 1,584,819.76 = 639,133.52 : x
  2. Step 2: Convert to fraction form
    1,148,431.28/1,584,819.76 = 639,133.52/x
  3. Step 3: Cross multiply
    1,148,431.28x = 1,584,819.76 × 639,133.52
  4. Step 4: Simplify right side
    1,148,431.28x = 1,012,911,431,774.36
  5. Step 5: Solve for x
    x = 1,012,911,431,774.36/1,148,431.28
  6. Step 6: Final answer
    x = 881,995.68

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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.