Home / 639,766.84-882,878.52-353,306.38

Finding the Fourth Proportional to 639,766.84, 882,878.52 and 353,306.38

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Solution

The fourth proportional to 639,766.84, 882,878.52 and 353,306.38 is: 487,562.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,766.84 : 882,878.52 = 353,306.38 : x
  2. Step 2: Convert to fraction form
    639,766.84/882,878.52 = 353,306.38/x
  3. Step 3: Cross multiply
    639,766.84x = 882,878.52 × 353,306.38
  4. Step 4: Simplify right side
    639,766.84x = 311,926,613,880.96
  5. Step 5: Solve for x
    x = 311,926,613,880.96/639,766.84
  6. Step 6: Final answer
    x = 487,562.96

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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.