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Finding the Fourth Proportional to 638,295.60, 880,849.72 and 351,816.83

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Solution

The fourth proportional to 638,295.60, 880,849.72 and 351,816.83 is: 485,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,295.60 : 880,849.72 = 351,816.83 : x
  2. Step 2: Convert to fraction form
    638,295.60/880,849.72 = 351,816.83/x
  3. Step 3: Cross multiply
    638,295.60x = 880,849.72 × 351,816.83
  4. Step 4: Simplify right side
    638,295.60x = 309,897,756,196.79
  5. Step 5: Solve for x
    x = 309,897,756,196.79/638,295.60
  6. Step 6: Final answer
    x = 485,508.21

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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.