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Finding the Fourth Proportional to 811,600.80, 1,215,068.40 and 496,672.80

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Solution

The fourth proportional to 811,600.80, 1,215,068.40 and 496,672.80 is: 743,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,600.80 : 1,215,068.40 = 496,672.80 : x
  2. Step 2: Convert to fraction form
    811,600.80/1,215,068.40 = 496,672.80/x
  3. Step 3: Cross multiply
    811,600.80x = 1,215,068.40 × 496,672.80
  4. Step 4: Simplify right side
    811,600.80x = 603,491,424,419.52
  5. Step 5: Solve for x
    x = 603,491,424,419.52/811,600.80
  6. Step 6: Final answer
    x = 743,581.60

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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.