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Finding the Fourth Proportional to 717,099.96, 990,486.60 and 520,552.75

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Solution

The fourth proportional to 717,099.96, 990,486.60 and 520,552.75 is: 719,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,099.96 : 990,486.60 = 520,552.75 : x
  2. Step 2: Convert to fraction form
    717,099.96/990,486.60 = 520,552.75/x
  3. Step 3: Cross multiply
    717,099.96x = 990,486.60 × 520,552.75
  4. Step 4: Simplify right side
    717,099.96x = 515,600,518,512.87
  5. Step 5: Solve for x
    x = 515,600,518,512.87/717,099.96
  6. Step 6: Final answer
    x = 719,007.87

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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.