Home / 867,095.40-1,299,768.30-394,120.20

Finding the Fourth Proportional to 867,095.40, 1,299,768.30 and 394,120.20

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Solution

The fourth proportional to 867,095.40, 1,299,768.30 and 394,120.20 is: 590,782.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,095.40 : 1,299,768.30 = 394,120.20 : x
  2. Step 2: Convert to fraction form
    867,095.40/1,299,768.30 = 394,120.20/x
  3. Step 3: Cross multiply
    867,095.40x = 1,299,768.30 × 394,120.20
  4. Step 4: Simplify right side
    867,095.40x = 512,264,942,349.66
  5. Step 5: Solve for x
    x = 512,264,942,349.66/867,095.40
  6. Step 6: Final answer
    x = 590,782.68

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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.