Home / 712,309.24-982,956.30-390,013.48

Finding the Fourth Proportional to 712,309.24, 982,956.30 and 390,013.48

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Solution

The fourth proportional to 712,309.24, 982,956.30 and 390,013.48 is: 538,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,309.24 : 982,956.30 = 390,013.48 : x
  2. Step 2: Convert to fraction form
    712,309.24/982,956.30 = 390,013.48/x
  3. Step 3: Cross multiply
    712,309.24x = 982,956.30 × 390,013.48
  4. Step 4: Simplify right side
    712,309.24x = 383,366,207,250.92
  5. Step 5: Solve for x
    x = 383,366,207,250.92/712,309.24
  6. Step 6: Final answer
    x = 538,201.93

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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.