Home / 814,690.08-1,221,876.90-409,774.32

Finding the Fourth Proportional to 814,690.08, 1,221,876.90 and 409,774.32

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Solution

The fourth proportional to 814,690.08, 1,221,876.90 and 409,774.32 is: 614,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,690.08 : 1,221,876.90 = 409,774.32 : x
  2. Step 2: Convert to fraction form
    814,690.08/1,221,876.90 = 409,774.32/x
  3. Step 3: Cross multiply
    814,690.08x = 1,221,876.90 × 409,774.32
  4. Step 4: Simplify right side
    814,690.08x = 500,693,775,821.21
  5. Step 5: Solve for x
    x = 500,693,775,821.21/814,690.08
  6. Step 6: Final answer
    x = 614,581.90

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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.