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Finding the Fourth Proportional to 717,510.96, 990,171.96 and 395,222.48

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Solution

The fourth proportional to 717,510.96, 990,171.96 and 395,222.48 is: 545,410.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,510.96 : 990,171.96 = 395,222.48 : x
  2. Step 2: Convert to fraction form
    717,510.96/990,171.96 = 395,222.48/x
  3. Step 3: Cross multiply
    717,510.96x = 990,171.96 × 395,222.48
  4. Step 4: Simplify right side
    717,510.96x = 391,338,217,657.66
  5. Step 5: Solve for x
    x = 391,338,217,657.66/717,510.96
  6. Step 6: Final answer
    x = 545,410.79

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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.