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Finding the Fourth Proportional to 638,432.48, 880,992.65 and 359,071.48

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Solution

The fourth proportional to 638,432.48, 880,992.65 and 359,071.48 is: 495,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,432.48 : 880,992.65 = 359,071.48 : x
  2. Step 2: Convert to fraction form
    638,432.48/880,992.65 = 359,071.48/x
  3. Step 3: Cross multiply
    638,432.48x = 880,992.65 × 359,071.48
  4. Step 4: Simplify right side
    638,432.48x = 316,339,336,703.54
  5. Step 5: Solve for x
    x = 316,339,336,703.54/638,432.48
  6. Step 6: Final answer
    x = 495,493.80

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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.