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Finding the Fourth Proportional to 553,732.20, 830,079.90 and 433,722.60

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Solution

The fourth proportional to 553,732.20, 830,079.90 and 433,722.60 is: 650,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,732.20 : 830,079.90 = 433,722.60 : x
  2. Step 2: Convert to fraction form
    553,732.20/830,079.90 = 433,722.60/x
  3. Step 3: Cross multiply
    553,732.20x = 830,079.90 × 433,722.60
  4. Step 4: Simplify right side
    553,732.20x = 360,024,412,435.74
  5. Step 5: Solve for x
    x = 360,024,412,435.74/553,732.20
  6. Step 6: Final answer
    x = 650,177.85

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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.