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Finding the Fourth Proportional to 662,144.12, 913,759.62 and 371,715.32

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Solution

The fourth proportional to 662,144.12, 913,759.62 and 371,715.32 is: 512,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,144.12 : 913,759.62 = 371,715.32 : x
  2. Step 2: Convert to fraction form
    662,144.12/913,759.62 = 371,715.32/x
  3. Step 3: Cross multiply
    662,144.12x = 913,759.62 × 371,715.32
  4. Step 4: Simplify right side
    662,144.12x = 339,658,449,551.38
  5. Step 5: Solve for x
    x = 339,658,449,551.38/662,144.12
  6. Step 6: Final answer
    x = 512,967.55

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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.