Home / 781,899.28-1,079,023.08-424,203.28

Finding the Fourth Proportional to 781,899.28, 1,079,023.08 and 424,203.28

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Solution

The fourth proportional to 781,899.28, 1,079,023.08 and 424,203.28 is: 585,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,899.28 : 1,079,023.08 = 424,203.28 : x
  2. Step 2: Convert to fraction form
    781,899.28/1,079,023.08 = 424,203.28/x
  3. Step 3: Cross multiply
    781,899.28x = 1,079,023.08 × 424,203.28
  4. Step 4: Simplify right side
    781,899.28x = 457,725,129,731.70
  5. Step 5: Solve for x
    x = 457,725,129,731.70/781,899.28
  6. Step 6: Final answer
    x = 585,401.65

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1.5x scale

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.