Home / 786,040.20-1,083,637.08-664,694.64

Finding the Fourth Proportional to 786,040.20, 1,083,637.08 and 664,694.64

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Solution

The fourth proportional to 786,040.20, 1,083,637.08 and 664,694.64 is: 916,349.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,040.20 : 1,083,637.08 = 664,694.64 : x
  2. Step 2: Convert to fraction form
    786,040.20/1,083,637.08 = 664,694.64/x
  3. Step 3: Cross multiply
    786,040.20x = 1,083,637.08 × 664,694.64
  4. Step 4: Simplify right side
    786,040.20x = 720,287,758,781.25
  5. Step 5: Solve for x
    x = 720,287,758,781.25/786,040.20
  6. Step 6: Final answer
    x = 916,349.77

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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.