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Finding the Fourth Proportional to 421,894.71, 633,279.47 and 282,626.55

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Solution

The fourth proportional to 421,894.71, 633,279.47 and 282,626.55 is: 424,232.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,894.71 : 633,279.47 = 282,626.55 : x
  2. Step 2: Convert to fraction form
    421,894.71/633,279.47 = 282,626.55/x
  3. Step 3: Cross multiply
    421,894.71x = 633,279.47 × 282,626.55
  4. Step 4: Simplify right side
    421,894.71x = 178,981,590,378.80
  5. Step 5: Solve for x
    x = 178,981,590,378.80/421,894.71
  6. Step 6: Final answer
    x = 424,232.84

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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.