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Finding the Fourth Proportional to 399,266.70, 598,900.05 and 383,520.30

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Solution

The fourth proportional to 399,266.70, 598,900.05 and 383,520.30 is: 575,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,266.70 : 598,900.05 = 383,520.30 : x
  2. Step 2: Convert to fraction form
    399,266.70/598,900.05 = 383,520.30/x
  3. Step 3: Cross multiply
    399,266.70x = 598,900.05 × 383,520.30
  4. Step 4: Simplify right side
    399,266.70x = 229,690,326,846.02
  5. Step 5: Solve for x
    x = 229,690,326,846.02/399,266.70
  6. Step 6: Final answer
    x = 575,280.45

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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.