Home / 665,864.40-998,926.20-192,565.20

Finding the Fourth Proportional to 665,864.40, 998,926.20 and 192,565.20

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Solution

The fourth proportional to 665,864.40, 998,926.20 and 192,565.20 is: 288,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,864.40 : 998,926.20 = 192,565.20 : x
  2. Step 2: Convert to fraction form
    665,864.40/998,926.20 = 192,565.20/x
  3. Step 3: Cross multiply
    665,864.40x = 998,926.20 × 192,565.20
  4. Step 4: Simplify right side
    665,864.40x = 192,358,423,488.24
  5. Step 5: Solve for x
    x = 192,358,423,488.24/665,864.40
  6. Step 6: Final answer
    x = 288,885.28

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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.