Home / 687,871.20-949,262.23-386,065.20

Finding the Fourth Proportional to 687,871.20, 949,262.23 and 386,065.20

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Solution

The fourth proportional to 687,871.20, 949,262.23 and 386,065.20 is: 532,769.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,871.20 : 949,262.23 = 386,065.20 : x
  2. Step 2: Convert to fraction form
    687,871.20/949,262.23 = 386,065.20/x
  3. Step 3: Cross multiply
    687,871.20x = 949,262.23 × 386,065.20
  4. Step 4: Simplify right side
    687,871.20x = 366,477,112,677.40
  5. Step 5: Solve for x
    x = 366,477,112,677.40/687,871.20
  6. Step 6: Final answer
    x = 532,769.96

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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.