Home / 766,478.55-1,149,895.80-261,043.91

Finding the Fourth Proportional to 766,478.55, 1,149,895.80 and 261,043.91

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Solution

The fourth proportional to 766,478.55, 1,149,895.80 and 261,043.91 is: 391,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,478.55 : 1,149,895.80 = 261,043.91 : x
  2. Step 2: Convert to fraction form
    766,478.55/1,149,895.80 = 261,043.91/x
  3. Step 3: Cross multiply
    766,478.55x = 1,149,895.80 × 261,043.91
  4. Step 4: Simplify right side
    766,478.55x = 300,173,292,915.91
  5. Step 5: Solve for x
    x = 300,173,292,915.91/766,478.55
  6. Step 6: Final answer
    x = 391,626.47

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1.5x scale

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.