Home / 708,478.11-977,680.33-386,194.50

Finding the Fourth Proportional to 708,478.11, 977,680.33 and 386,194.50

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Solution

The fourth proportional to 708,478.11, 977,680.33 and 386,194.50 is: 532,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,478.11 : 977,680.33 = 386,194.50 : x
  2. Step 2: Convert to fraction form
    708,478.11/977,680.33 = 386,194.50/x
  3. Step 3: Cross multiply
    708,478.11x = 977,680.33 × 386,194.50
  4. Step 4: Simplify right side
    708,478.11x = 377,574,765,238.70
  5. Step 5: Solve for x
    x = 377,574,765,238.70/708,478.11
  6. Step 6: Final answer
    x = 532,937.80

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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.