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Finding the Fourth Proportional to 868,908.60, 1,199,028.42 and 486,861.57

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Solution

The fourth proportional to 868,908.60, 1,199,028.42 and 486,861.57 is: 671,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,908.60 : 1,199,028.42 = 486,861.57 : x
  2. Step 2: Convert to fraction form
    868,908.60/1,199,028.42 = 486,861.57/x
  3. Step 3: Cross multiply
    868,908.60x = 1,199,028.42 × 486,861.57
  4. Step 4: Simplify right side
    868,908.60x = 583,760,859,035.82
  5. Step 5: Solve for x
    x = 583,760,859,035.82/868,908.60
  6. Step 6: Final answer
    x = 671,832.30

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Double scale
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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.