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Finding the Fourth Proportional to 519,862.40, 778,481.40 and 341,403.20

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Solution

The fourth proportional to 519,862.40, 778,481.40 and 341,403.20 is: 511,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,862.40 : 778,481.40 = 341,403.20 : x
  2. Step 2: Convert to fraction form
    519,862.40/778,481.40 = 341,403.20/x
  3. Step 3: Cross multiply
    519,862.40x = 778,481.40 × 341,403.20
  4. Step 4: Simplify right side
    519,862.40x = 265,776,041,100.48
  5. Step 5: Solve for x
    x = 265,776,041,100.48/519,862.40
  6. Step 6: Final answer
    x = 511,243.05

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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.