Home / 717,045.90-989,507.77-394,743.66

Finding the Fourth Proportional to 717,045.90, 989,507.77 and 394,743.66

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Solution

The fourth proportional to 717,045.90, 989,507.77 and 394,743.66 is: 544,737.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,045.90 : 989,507.77 = 394,743.66 : x
  2. Step 2: Convert to fraction form
    717,045.90/989,507.77 = 394,743.66/x
  3. Step 3: Cross multiply
    717,045.90x = 989,507.77 × 394,743.66
  4. Step 4: Simplify right side
    717,045.90x = 390,601,918,728.24
  5. Step 5: Solve for x
    x = 390,601,918,728.24/717,045.90
  6. Step 6: Final answer
    x = 544,737.68

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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.