Home / 781,046.16-1,170,231.60-426,309.12

Finding the Fourth Proportional to 781,046.16, 1,170,231.60 and 426,309.12

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Solution

The fourth proportional to 781,046.16, 1,170,231.60 and 426,309.12 is: 638,733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,046.16 : 1,170,231.60 = 426,309.12 : x
  2. Step 2: Convert to fraction form
    781,046.16/1,170,231.60 = 426,309.12/x
  3. Step 3: Cross multiply
    781,046.16x = 1,170,231.60 × 426,309.12
  4. Step 4: Simplify right side
    781,046.16x = 498,880,403,592.19
  5. Step 5: Solve for x
    x = 498,880,403,592.19/781,046.16
  6. Step 6: Final answer
    x = 638,733.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.