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Finding the Fourth Proportional to 813,287.71, 1,218,809.58 and 586,843.84

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Solution

The fourth proportional to 813,287.71, 1,218,809.58 and 586,843.84 is: 879,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,287.71 : 1,218,809.58 = 586,843.84 : x
  2. Step 2: Convert to fraction form
    813,287.71/1,218,809.58 = 586,843.84/x
  3. Step 3: Cross multiply
    813,287.71x = 1,218,809.58 × 586,843.84
  4. Step 4: Simplify right side
    813,287.71x = 715,250,894,155.99
  5. Step 5: Solve for x
    x = 715,250,894,155.99/813,287.71
  6. Step 6: Final answer
    x = 879,456.17

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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.