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Finding the Fourth Proportional to 479,578.76, 661,818.75 and 264,718.87

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Solution

The fourth proportional to 479,578.76, 661,818.75 and 264,718.87 is: 365,312.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,578.76 : 661,818.75 = 264,718.87 : x
  2. Step 2: Convert to fraction form
    479,578.76/661,818.75 = 264,718.87/x
  3. Step 3: Cross multiply
    479,578.76x = 661,818.75 × 264,718.87
  4. Step 4: Simplify right side
    479,578.76x = 175,195,910,486.61
  5. Step 5: Solve for x
    x = 175,195,910,486.61/479,578.76
  6. Step 6: Final answer
    x = 365,312.07

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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.