Home / 825,315.28-1,138,982.04-462,721.61

Finding the Fourth Proportional to 825,315.28, 1,138,982.04 and 462,721.61

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Solution

The fourth proportional to 825,315.28, 1,138,982.04 and 462,721.61 is: 638,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,315.28 : 1,138,982.04 = 462,721.61 : x
  2. Step 2: Convert to fraction form
    825,315.28/1,138,982.04 = 462,721.61/x
  3. Step 3: Cross multiply
    825,315.28x = 1,138,982.04 × 462,721.61
  4. Step 4: Simplify right side
    825,315.28x = 527,031,606,157.34
  5. Step 5: Solve for x
    x = 527,031,606,157.34/825,315.28
  6. Step 6: Final answer
    x = 638,582.15

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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.