Home / 491,340.15-678,064.49-267,580.57

Finding the Fourth Proportional to 491,340.15, 678,064.49 and 267,580.57

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Solution

The fourth proportional to 491,340.15, 678,064.49 and 267,580.57 is: 369,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,340.15 : 678,064.49 = 267,580.57 : x
  2. Step 2: Convert to fraction form
    491,340.15/678,064.49 = 267,580.57/x
  3. Step 3: Cross multiply
    491,340.15x = 678,064.49 × 267,580.57
  4. Step 4: Simplify right side
    491,340.15x = 181,436,883,244.06
  5. Step 5: Solve for x
    x = 181,436,883,244.06/491,340.15
  6. Step 6: Final answer
    x = 369,269.40

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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.