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Finding the Fourth Proportional to 519,818.80, 779,339.40 and 283,428.40

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Solution

The fourth proportional to 519,818.80, 779,339.40 and 283,428.40 is: 424,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,818.80 : 779,339.40 = 283,428.40 : x
  2. Step 2: Convert to fraction form
    519,818.80/779,339.40 = 283,428.40/x
  3. Step 3: Cross multiply
    519,818.80x = 779,339.40 × 283,428.40
  4. Step 4: Simplify right side
    519,818.80x = 220,886,919,198.96
  5. Step 5: Solve for x
    x = 220,886,919,198.96/519,818.80
  6. Step 6: Final answer
    x = 424,930.61

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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.