Home / 717,186.34-989,724.45-394,926.36

Finding the Fourth Proportional to 717,186.34, 989,724.45 and 394,926.36

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Solution

The fourth proportional to 717,186.34, 989,724.45 and 394,926.36 is: 545,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,186.34 : 989,724.45 = 394,926.36 : x
  2. Step 2: Convert to fraction form
    717,186.34/989,724.45 = 394,926.36/x
  3. Step 3: Cross multiply
    717,186.34x = 989,724.45 × 394,926.36
  4. Step 4: Simplify right side
    717,186.34x = 390,868,274,441.50
  5. Step 5: Solve for x
    x = 390,868,274,441.50/717,186.34
  6. Step 6: Final answer
    x = 545,002.40

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Double scale
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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.