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Finding the Fourth Proportional to 621,812.10, 932,718.15 and 548,328.90

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Solution

The fourth proportional to 621,812.10, 932,718.15 and 548,328.90 is: 822,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,812.10 : 932,718.15 = 548,328.90 : x
  2. Step 2: Convert to fraction form
    621,812.10/932,718.15 = 548,328.90/x
  3. Step 3: Cross multiply
    621,812.10x = 932,718.15 × 548,328.90
  4. Step 4: Simplify right side
    621,812.10x = 511,436,317,199.54
  5. Step 5: Solve for x
    x = 511,436,317,199.54/621,812.10
  6. Step 6: Final answer
    x = 822,493.35

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Double scale
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Similar ratio
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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.