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Finding the Fourth Proportional to 609,864, 841,612.32 and 371,400

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Solution

The fourth proportional to 609,864, 841,612.32 and 371,400 is: 512,532

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,864 : 841,612.32 = 371,400 : x
  2. Step 2: Convert to fraction form
    609,864/841,612.32 = 371,400/x
  3. Step 3: Cross multiply
    609,864x = 841,612.32 × 371,400
  4. Step 4: Simplify right side
    609,864x = 312,574,815,648
  5. Step 5: Solve for x
    x = 312,574,815,648/609,864
  6. Step 6: Final answer
    x = 512,532

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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.