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Finding the Fourth Proportional to 578,039.60, 866,476.20 and 262,722.80

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Solution

The fourth proportional to 578,039.60, 866,476.20 and 262,722.80 is: 393,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,039.60 : 866,476.20 = 262,722.80 : x
  2. Step 2: Convert to fraction form
    578,039.60/866,476.20 = 262,722.80/x
  3. Step 3: Cross multiply
    578,039.60x = 866,476.20 × 262,722.80
  4. Step 4: Simplify right side
    578,039.60x = 227,643,053,397.36
  5. Step 5: Solve for x
    x = 227,643,053,397.36/578,039.60
  6. Step 6: Final answer
    x = 393,819.13

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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.