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Finding the Fourth Proportional to 638,010.56, 880,493.76 and 351,530.57

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Solution

The fourth proportional to 638,010.56, 880,493.76 and 351,530.57 is: 485,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,010.56 : 880,493.76 = 351,530.57 : x
  2. Step 2: Convert to fraction form
    638,010.56/880,493.76 = 351,530.57/x
  3. Step 3: Cross multiply
    638,010.56x = 880,493.76 × 351,530.57
  4. Step 4: Simplify right side
    638,010.56x = 309,520,468,931.77
  5. Step 5: Solve for x
    x = 309,520,468,931.77/638,010.56
  6. Step 6: Final answer
    x = 485,133.77

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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.