Home / 518,916.20-778,374.30-144,938.60

Finding the Fourth Proportional to 518,916.20, 778,374.30 and 144,938.60

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Solution

The fourth proportional to 518,916.20, 778,374.30 and 144,938.60 is: 217,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,916.20 : 778,374.30 = 144,938.60 : x
  2. Step 2: Convert to fraction form
    518,916.20/778,374.30 = 144,938.60/x
  3. Step 3: Cross multiply
    518,916.20x = 778,374.30 × 144,938.60
  4. Step 4: Simplify right side
    518,916.20x = 112,816,481,317.98
  5. Step 5: Solve for x
    x = 112,816,481,317.98/518,916.20
  6. Step 6: Final answer
    x = 217,407.90

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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.