Home / 1,781,520.30-2,672,280.45-519,389.10

Finding the Fourth Proportional to 1,781,520.30, 2,672,280.45 and 519,389.10

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Solution

The fourth proportional to 1,781,520.30, 2,672,280.45 and 519,389.10 is: 779,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781,520.30 : 2,672,280.45 = 519,389.10 : x
  2. Step 2: Convert to fraction form
    1,781,520.30/2,672,280.45 = 519,389.10/x
  3. Step 3: Cross multiply
    1,781,520.30x = 2,672,280.45 × 519,389.10
  4. Step 4: Simplify right side
    1,781,520.30x = 1,387,953,337,873.10
  5. Step 5: Solve for x
    x = 1,387,953,337,873.10/1,781,520.30
  6. Step 6: Final answer
    x = 779,083.65

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Double scale
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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.