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Finding the Fourth Proportional to 609,891, 841,649.64 and 371,427

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Solution

The fourth proportional to 609,891, 841,649.64 and 371,427 is: 512,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,891 : 841,649.64 = 371,427 : x
  2. Step 2: Convert to fraction form
    609,891/841,649.64 = 371,427/x
  3. Step 3: Cross multiply
    609,891x = 841,649.64 × 371,427
  4. Step 4: Simplify right side
    609,891x = 312,611,400,836.28
  5. Step 5: Solve for x
    x = 312,611,400,836.28/609,891
  6. Step 6: Final answer
    x = 512,569.30

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1.5x scale

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.