Home / 689,360.25-951,317.15-403,120.83

Finding the Fourth Proportional to 689,360.25, 951,317.15 and 403,120.83

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Solution

The fourth proportional to 689,360.25, 951,317.15 and 403,120.83 is: 556,306.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,360.25 : 951,317.15 = 403,120.83 : x
  2. Step 2: Convert to fraction form
    689,360.25/951,317.15 = 403,120.83/x
  3. Step 3: Cross multiply
    689,360.25x = 951,317.15 × 403,120.83
  4. Step 4: Simplify right side
    689,360.25x = 383,495,757,085.63
  5. Step 5: Solve for x
    x = 383,495,757,085.63/689,360.25
  6. Step 6: Final answer
    x = 556,306.75

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.