Home / 28,386,728.20-42,579,479.53-7,915,902.49

Finding the Fourth Proportional to 28,386,728.20, 42,579,479.53 and 7,915,902.49

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Solution

The fourth proportional to 28,386,728.20, 42,579,479.53 and 7,915,902.49 is: 11,873,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386,728.20 : 42,579,479.53 = 7,915,902.49 : x
  2. Step 2: Convert to fraction form
    28,386,728.20/42,579,479.53 = 7,915,902.49/x
  3. Step 3: Cross multiply
    28,386,728.20x = 42,579,479.53 × 7,915,902.49
  4. Step 4: Simplify right side
    28,386,728.20x = 337,055,008,034,431.06
  5. Step 5: Solve for x
    x = 337,055,008,034,431.06/28,386,728.20
  6. Step 6: Final answer
    x = 11,873,682.86

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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.