Home / 867,114.90-1,299,797.55-394,139.70

Finding the Fourth Proportional to 867,114.90, 1,299,797.55 and 394,139.70

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Solution

The fourth proportional to 867,114.90, 1,299,797.55 and 394,139.70 is: 590,811.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,114.90 : 1,299,797.55 = 394,139.70 : x
  2. Step 2: Convert to fraction form
    867,114.90/1,299,797.55 = 394,139.70/x
  3. Step 3: Cross multiply
    867,114.90x = 1,299,797.55 × 394,139.70
  4. Step 4: Simplify right side
    867,114.90x = 512,301,816,417.74
  5. Step 5: Solve for x
    x = 512,301,816,417.74/867,114.90
  6. Step 6: Final answer
    x = 590,811.92

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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.