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Finding the Fourth Proportional to 543,004.20, 813,704.40 and 393,559.20

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Solution

The fourth proportional to 543,004.20, 813,704.40 and 393,559.20 is: 589,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,004.20 : 813,704.40 = 393,559.20 : x
  2. Step 2: Convert to fraction form
    543,004.20/813,704.40 = 393,559.20/x
  3. Step 3: Cross multiply
    543,004.20x = 813,704.40 × 393,559.20
  4. Step 4: Simplify right side
    543,004.20x = 320,240,852,700.48
  5. Step 5: Solve for x
    x = 320,240,852,700.48/543,004.20
  6. Step 6: Final answer
    x = 589,757.60

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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.