Home / 578,685.60-868,588.70-279,376.29

Finding the Fourth Proportional to 578,685.60, 868,588.70 and 279,376.29

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Solution

The fourth proportional to 578,685.60, 868,588.70 and 279,376.29 is: 419,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,685.60 : 868,588.70 = 279,376.29 : x
  2. Step 2: Convert to fraction form
    578,685.60/868,588.70 = 279,376.29/x
  3. Step 3: Cross multiply
    578,685.60x = 868,588.70 × 279,376.29
  4. Step 4: Simplify right side
    578,685.60x = 242,663,087,145.04
  5. Step 5: Solve for x
    x = 242,663,087,145.04/578,685.60
  6. Step 6: Final answer
    x = 419,334.93

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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.