Home / 388,470,873.72-582,706,306.26-215,865,135.48

Finding the Fourth Proportional to 388,470,873.72, 582,706,306.26 and 215,865,135.48

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Solution

The fourth proportional to 388,470,873.72, 582,706,306.26 and 215,865,135.48 is: 323,797,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,470,873.72 : 582,706,306.26 = 215,865,135.48 : x
  2. Step 2: Convert to fraction form
    388,470,873.72/582,706,306.26 = 215,865,135.48/x
  3. Step 3: Cross multiply
    388,470,873.72x = 582,706,306.26 × 215,865,135.48
  4. Step 4: Simplify right side
    388,470,873.72x = 125,785,975,745,865,264
  5. Step 5: Solve for x
    x = 125,785,975,745,865,264/388,470,873.72
  6. Step 6: Final answer
    x = 323,797,700.82

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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.