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Finding the Fourth Proportional to 933,390, 1,400,085 and 268,542

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Solution

The fourth proportional to 933,390, 1,400,085 and 268,542 is: 402,813

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,390 : 1,400,085 = 268,542 : x
  2. Step 2: Convert to fraction form
    933,390/1,400,085 = 268,542/x
  3. Step 3: Cross multiply
    933,390x = 1,400,085 × 268,542
  4. Step 4: Simplify right side
    933,390x = 375,981,626,070
  5. Step 5: Solve for x
    x = 375,981,626,070/933,390
  6. Step 6: Final answer
    x = 402,813

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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.