Home / 781,003.61-1,170,168.09-426,266.54

Finding the Fourth Proportional to 781,003.61, 1,170,168.09 and 426,266.54

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Solution

The fourth proportional to 781,003.61, 1,170,168.09 and 426,266.54 is: 638,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,003.61 : 1,170,168.09 = 426,266.54 : x
  2. Step 2: Convert to fraction form
    781,003.61/1,170,168.09 = 426,266.54/x
  3. Step 3: Cross multiply
    781,003.61x = 1,170,168.09 × 426,266.54
  4. Step 4: Simplify right side
    781,003.61x = 498,803,497,091.87
  5. Step 5: Solve for x
    x = 498,803,497,091.87/781,003.61
  6. Step 6: Final answer
    x = 638,669.90

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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.