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Finding the Fourth Proportional to 578,296.40, 866,278.20 and 328,686.80

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Solution

The fourth proportional to 578,296.40, 866,278.20 and 328,686.80 is: 492,367.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,296.40 : 866,278.20 = 328,686.80 : x
  2. Step 2: Convert to fraction form
    578,296.40/866,278.20 = 328,686.80/x
  3. Step 3: Cross multiply
    578,296.40x = 866,278.20 × 328,686.80
  4. Step 4: Simplify right side
    578,296.40x = 284,734,209,467.76
  5. Step 5: Solve for x
    x = 284,734,209,467.76/578,296.40
  6. Step 6: Final answer
    x = 492,367.25

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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.