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Finding the Fourth Proportional to 717,242.22, 989,794.24 and 394,951.54

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Solution

The fourth proportional to 717,242.22, 989,794.24 and 394,951.54 is: 545,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,242.22 : 989,794.24 = 394,951.54 : x
  2. Step 2: Convert to fraction form
    717,242.22/989,794.24 = 394,951.54/x
  3. Step 3: Cross multiply
    717,242.22x = 989,794.24 × 394,951.54
  4. Step 4: Simplify right side
    717,242.22x = 390,920,759,371.13
  5. Step 5: Solve for x
    x = 390,920,759,371.13/717,242.22
  6. Step 6: Final answer
    x = 545,033.11

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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.