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Finding the Fourth Proportional to 561,658.80, 842,488.20 and 245,780.40

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Solution

The fourth proportional to 561,658.80, 842,488.20 and 245,780.40 is: 368,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,658.80 : 842,488.20 = 245,780.40 : x
  2. Step 2: Convert to fraction form
    561,658.80/842,488.20 = 245,780.40/x
  3. Step 3: Cross multiply
    561,658.80x = 842,488.20 × 245,780.40
  4. Step 4: Simplify right side
    561,658.80x = 207,067,086,791.28
  5. Step 5: Solve for x
    x = 207,067,086,791.28/561,658.80
  6. Step 6: Final answer
    x = 368,670.60

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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.