Home / 743,066.79-1,025,441.13-420,768.60

Finding the Fourth Proportional to 743,066.79, 1,025,441.13 and 420,768.60

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Solution

The fourth proportional to 743,066.79, 1,025,441.13 and 420,768.60 is: 580,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,066.79 : 1,025,441.13 = 420,768.60 : x
  2. Step 2: Convert to fraction form
    743,066.79/1,025,441.13 = 420,768.60/x
  3. Step 3: Cross multiply
    743,066.79x = 1,025,441.13 × 420,768.60
  4. Step 4: Simplify right side
    743,066.79x = 431,473,428,652.52
  5. Step 5: Solve for x
    x = 431,473,428,652.52/743,066.79
  6. Step 6: Final answer
    x = 580,665.74

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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.