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Finding the Fourth Proportional to 614,428.60, 921,642.90 and 549,110.20

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Solution

The fourth proportional to 614,428.60, 921,642.90 and 549,110.20 is: 823,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,428.60 : 921,642.90 = 549,110.20 : x
  2. Step 2: Convert to fraction form
    614,428.60/921,642.90 = 549,110.20/x
  3. Step 3: Cross multiply
    614,428.60x = 921,642.90 × 549,110.20
  4. Step 4: Simplify right side
    614,428.60x = 506,083,517,147.58
  5. Step 5: Solve for x
    x = 506,083,517,147.58/614,428.60
  6. Step 6: Final answer
    x = 823,665.30

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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.