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Finding the Fourth Proportional to 691,803.20, 1,037,704.80 and 614,820.80

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Solution

The fourth proportional to 691,803.20, 1,037,704.80 and 614,820.80 is: 922,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,803.20 : 1,037,704.80 = 614,820.80 : x
  2. Step 2: Convert to fraction form
    691,803.20/1,037,704.80 = 614,820.80/x
  3. Step 3: Cross multiply
    691,803.20x = 1,037,704.80 × 614,820.80
  4. Step 4: Simplify right side
    691,803.20x = 638,002,495,299.84
  5. Step 5: Solve for x
    x = 638,002,495,299.84/691,803.20
  6. Step 6: Final answer
    x = 922,231.20

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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.