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Finding the Fourth Proportional to 435,207.80, 652,811.70 and 285,908.60

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Solution

The fourth proportional to 435,207.80, 652,811.70 and 285,908.60 is: 428,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,207.80 : 652,811.70 = 285,908.60 : x
  2. Step 2: Convert to fraction form
    435,207.80/652,811.70 = 285,908.60/x
  3. Step 3: Cross multiply
    435,207.80x = 652,811.70 × 285,908.60
  4. Step 4: Simplify right side
    435,207.80x = 186,644,479,210.62
  5. Step 5: Solve for x
    x = 186,644,479,210.62/435,207.80
  6. Step 6: Final answer
    x = 428,862.90

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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.