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Finding the Fourth Proportional to 638,106.46, 880,592.82 and 351,636.80

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Solution

The fourth proportional to 638,106.46, 880,592.82 and 351,636.80 is: 485,262.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,106.46 : 880,592.82 = 351,636.80 : x
  2. Step 2: Convert to fraction form
    638,106.46/880,592.82 = 351,636.80/x
  3. Step 3: Cross multiply
    638,106.46x = 880,592.82 × 351,636.80
  4. Step 4: Simplify right side
    638,106.46x = 309,648,835,606.17
  5. Step 5: Solve for x
    x = 309,648,835,606.17/638,106.46
  6. Step 6: Final answer
    x = 485,262.03

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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.