Home / 420,638.64-580,547.98-267,517.18

Finding the Fourth Proportional to 420,638.64, 580,547.98 and 267,517.18

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Solution

The fourth proportional to 420,638.64, 580,547.98 and 267,517.18 is: 369,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,638.64 : 580,547.98 = 267,517.18 : x
  2. Step 2: Convert to fraction form
    420,638.64/580,547.98 = 267,517.18/x
  3. Step 3: Cross multiply
    420,638.64x = 580,547.98 × 267,517.18
  4. Step 4: Simplify right side
    420,638.64x = 155,306,558,464.30
  5. Step 5: Solve for x
    x = 155,306,558,464.30/420,638.64
  6. Step 6: Final answer
    x = 369,216.10

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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.