Home / 858,321,816.62-1,285,758,876.51-391,340,873.23

Finding the Fourth Proportional to 858,321,816.62, 1,285,758,876.51 and 391,340,873.23

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Solution

The fourth proportional to 858,321,816.62, 1,285,758,876.51 and 391,340,873.23 is: 586,225,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,321,816.62 : 1,285,758,876.51 = 391,340,873.23 : x
  2. Step 2: Convert to fraction form
    858,321,816.62/1,285,758,876.51 = 391,340,873.23/x
  3. Step 3: Cross multiply
    858,321,816.62x = 1,285,758,876.51 × 391,340,873.23
  4. Step 4: Simplify right side
    858,321,816.62x = 503,170,001,493,432,768
  5. Step 5: Solve for x
    x = 503,170,001,493,432,768/858,321,816.62
  6. Step 6: Final answer
    x = 586,225,343.17

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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.