Home / 712,271.55-982,934.88-389,981.73

Finding the Fourth Proportional to 712,271.55, 982,934.88 and 389,981.73

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Solution

The fourth proportional to 712,271.55, 982,934.88 and 389,981.73 is: 538,174.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,271.55 : 982,934.88 = 389,981.73 : x
  2. Step 2: Convert to fraction form
    712,271.55/982,934.88 = 389,981.73/x
  3. Step 3: Cross multiply
    712,271.55x = 982,934.88 × 389,981.73
  4. Step 4: Simplify right side
    712,271.55x = 383,326,644,979.74
  5. Step 5: Solve for x
    x = 383,326,644,979.74/712,271.55
  6. Step 6: Final answer
    x = 538,174.86

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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.