Home / 391,223,908.20-586,835,862.30-209,825,380.20

Finding the Fourth Proportional to 391,223,908.20, 586,835,862.30 and 209,825,380.20

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Solution

The fourth proportional to 391,223,908.20, 586,835,862.30 and 209,825,380.20 is: 314,738,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,223,908.20 : 586,835,862.30 = 209,825,380.20 : x
  2. Step 2: Convert to fraction form
    391,223,908.20/586,835,862.30 = 209,825,380.20/x
  3. Step 3: Cross multiply
    391,223,908.20x = 586,835,862.30 × 209,825,380.20
  4. Step 4: Simplify right side
    391,223,908.20x = 123,133,057,922,092,336
  5. Step 5: Solve for x
    x = 123,133,057,922,092,336/391,223,908.20
  6. Step 6: Final answer
    x = 314,738,070.30

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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.