Home / 781,785.39-1,079,537.18-491,880.32

Finding the Fourth Proportional to 781,785.39, 1,079,537.18 and 491,880.32

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Solution

The fourth proportional to 781,785.39, 1,079,537.18 and 491,880.32 is: 679,218.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,785.39 : 1,079,537.18 = 491,880.32 : x
  2. Step 2: Convert to fraction form
    781,785.39/1,079,537.18 = 491,880.32/x
  3. Step 3: Cross multiply
    781,785.39x = 1,079,537.18 × 491,880.32
  4. Step 4: Simplify right side
    781,785.39x = 531,003,085,693.21
  5. Step 5: Solve for x
    x = 531,003,085,693.21/781,785.39
  6. Step 6: Final answer
    x = 679,218.48

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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.