Home / 717,253.90-989,817.24-394,975.42

Finding the Fourth Proportional to 717,253.90, 989,817.24 and 394,975.42

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Solution

The fourth proportional to 717,253.90, 989,817.24 and 394,975.42 is: 545,069.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,253.90 : 989,817.24 = 394,975.42 : x
  2. Step 2: Convert to fraction form
    717,253.90/989,817.24 = 394,975.42/x
  3. Step 3: Cross multiply
    717,253.90x = 989,817.24 × 394,975.42
  4. Step 4: Simplify right side
    717,253.90x = 390,953,480,092.24
  5. Step 5: Solve for x
    x = 390,953,480,092.24/717,253.90
  6. Step 6: Final answer
    x = 545,069.86

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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.