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Finding the Fourth Proportional to 578,255.40, 866,216.70 and 328,645.80

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Solution

The fourth proportional to 578,255.40, 866,216.70 and 328,645.80 is: 492,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,255.40 : 866,216.70 = 328,645.80 : x
  2. Step 2: Convert to fraction form
    578,255.40/866,216.70 = 328,645.80/x
  3. Step 3: Cross multiply
    578,255.40x = 866,216.70 × 328,645.80
  4. Step 4: Simplify right side
    578,255.40x = 284,678,480,344.86
  5. Step 5: Solve for x
    x = 284,678,480,344.86/578,255.40
  6. Step 6: Final answer
    x = 492,305.79

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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.