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Finding the Fourth Proportional to 542,948.40, 813,110.40 and 519,328.80

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Solution

The fourth proportional to 542,948.40, 813,110.40 and 519,328.80 is: 777,738.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,948.40 : 813,110.40 = 519,328.80 : x
  2. Step 2: Convert to fraction form
    542,948.40/813,110.40 = 519,328.80/x
  3. Step 3: Cross multiply
    542,948.40x = 813,110.40 × 519,328.80
  4. Step 4: Simplify right side
    542,948.40x = 422,271,648,299.52
  5. Step 5: Solve for x
    x = 422,271,648,299.52/542,948.40
  6. Step 6: Final answer
    x = 777,738.08

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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.