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Finding the Fourth Proportional to 545,219.70, 816,079.95 and 426,246.90

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Solution

The fourth proportional to 545,219.70, 816,079.95 and 426,246.90 is: 638,002.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,219.70 : 816,079.95 = 426,246.90 : x
  2. Step 2: Convert to fraction form
    545,219.70/816,079.95 = 426,246.90/x
  3. Step 3: Cross multiply
    545,219.70x = 816,079.95 × 426,246.90
  4. Step 4: Simplify right side
    545,219.70x = 347,851,548,839.66
  5. Step 5: Solve for x
    x = 347,851,548,839.66/545,219.70
  6. Step 6: Final answer
    x = 638,002.53

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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.