Home / 638,294.60-880,848.34-351,815.83

Finding the Fourth Proportional to 638,294.60, 880,848.34 and 351,815.83

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Solution

The fourth proportional to 638,294.60, 880,848.34 and 351,815.83 is: 485,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,294.60 : 880,848.34 = 351,815.83 : x
  2. Step 2: Convert to fraction form
    638,294.60/880,848.34 = 351,815.83/x
  3. Step 3: Cross multiply
    638,294.60x = 880,848.34 × 351,815.83
  4. Step 4: Simplify right side
    638,294.60x = 309,896,386,759.56
  5. Step 5: Solve for x
    x = 309,896,386,759.56/638,294.60
  6. Step 6: Final answer
    x = 485,506.83

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Double scale
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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.