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Finding the Fourth Proportional to 621,821.60, 932,732.40 and 408,010.40

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Solution

The fourth proportional to 621,821.60, 932,732.40 and 408,010.40 is: 612,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,821.60 : 932,732.40 = 408,010.40 : x
  2. Step 2: Convert to fraction form
    621,821.60/932,732.40 = 408,010.40/x
  3. Step 3: Cross multiply
    621,821.60x = 932,732.40 × 408,010.40
  4. Step 4: Simplify right side
    621,821.60x = 380,564,519,616.96
  5. Step 5: Solve for x
    x = 380,564,519,616.96/621,821.60
  6. Step 6: Final answer
    x = 612,015.60

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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.