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Finding the Fourth Proportional to 613,531, 846,672.78 and 345,264.76

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Solution

The fourth proportional to 613,531, 846,672.78 and 345,264.76 is: 476,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,531 : 846,672.78 = 345,264.76 : x
  2. Step 2: Convert to fraction form
    613,531/846,672.78 = 345,264.76/x
  3. Step 3: Cross multiply
    613,531x = 846,672.78 × 345,264.76
  4. Step 4: Simplify right side
    613,531x = 292,326,274,185.23
  5. Step 5: Solve for x
    x = 292,326,274,185.23/613,531
  6. Step 6: Final answer
    x = 476,465.37

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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.