Home / 790,939.68-1,091,491.28-428,355.28

Finding the Fourth Proportional to 790,939.68, 1,091,491.28 and 428,355.28

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Solution

The fourth proportional to 790,939.68, 1,091,491.28 and 428,355.28 is: 591,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,939.68 : 1,091,491.28 = 428,355.28 : x
  2. Step 2: Convert to fraction form
    790,939.68/1,091,491.28 = 428,355.28/x
  3. Step 3: Cross multiply
    790,939.68x = 1,091,491.28 × 428,355.28
  4. Step 4: Simplify right side
    790,939.68x = 467,546,052,861.96
  5. Step 5: Solve for x
    x = 467,546,052,861.96/790,939.68
  6. Step 6: Final answer
    x = 591,127.32

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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.