Home / 391,195,145.70-586,792,718.55-209,796,617.70

Finding the Fourth Proportional to 391,195,145.70, 586,792,718.55 and 209,796,617.70

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Solution

The fourth proportional to 391,195,145.70, 586,792,718.55 and 209,796,617.70 is: 314,694,926.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,195,145.70 : 586,792,718.55 = 209,796,617.70 : x
  2. Step 2: Convert to fraction form
    391,195,145.70/586,792,718.55 = 209,796,617.70/x
  3. Step 3: Cross multiply
    391,195,145.70x = 586,792,718.55 × 209,796,617.70
  4. Step 4: Simplify right side
    391,195,145.70x = 123,107,127,642,778,032
  5. Step 5: Solve for x
    x = 123,107,127,642,778,032/391,195,145.70
  6. Step 6: Final answer
    x = 314,694,926.55

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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.