Home / 921,029.31-1,381,691.70-388,628.76

Finding the Fourth Proportional to 921,029.31, 1,381,691.70 and 388,628.76

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Solution

The fourth proportional to 921,029.31, 1,381,691.70 and 388,628.76 is: 583,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,029.31 : 1,381,691.70 = 388,628.76 : x
  2. Step 2: Convert to fraction form
    921,029.31/1,381,691.70 = 388,628.76/x
  3. Step 3: Cross multiply
    921,029.31x = 1,381,691.70 × 388,628.76
  4. Step 4: Simplify right side
    921,029.31x = 536,965,132,275.61
  5. Step 5: Solve for x
    x = 536,965,132,275.61/921,029.31
  6. Step 6: Final answer
    x = 583,005.48

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1.5x scale

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.