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Finding the Fourth Proportional to 638,337.58, 880,879.34 and 347,942.74

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Solution

The fourth proportional to 638,337.58, 880,879.34 and 347,942.74 is: 480,146.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,337.58 : 880,879.34 = 347,942.74 : x
  2. Step 2: Convert to fraction form
    638,337.58/880,879.34 = 347,942.74/x
  3. Step 3: Cross multiply
    638,337.58x = 880,879.34 × 347,942.74
  4. Step 4: Simplify right side
    638,337.58x = 306,495,569,531.12
  5. Step 5: Solve for x
    x = 306,495,569,531.12/638,337.58
  6. Step 6: Final answer
    x = 480,146.52

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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.