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Finding the Fourth Proportional to 578,889.16, 868,894.26 and 279,580.12

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Solution

The fourth proportional to 578,889.16, 868,894.26 and 279,580.12 is: 419,640.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,889.16 : 868,894.26 = 279,580.12 : x
  2. Step 2: Convert to fraction form
    578,889.16/868,894.26 = 279,580.12/x
  3. Step 3: Cross multiply
    578,889.16x = 868,894.26 × 279,580.12
  4. Step 4: Simplify right side
    578,889.16x = 242,925,561,478.11
  5. Step 5: Solve for x
    x = 242,925,561,478.11/578,889.16
  6. Step 6: Final answer
    x = 419,640.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.