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Finding the Fourth Proportional to 717,462.86, 990,087.99 and 395,173.58

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Solution

The fourth proportional to 717,462.86, 990,087.99 and 395,173.58 is: 545,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,462.86 : 990,087.99 = 395,173.58 : x
  2. Step 2: Convert to fraction form
    717,462.86/990,087.99 = 395,173.58/x
  3. Step 3: Cross multiply
    717,462.86x = 990,087.99 × 395,173.58
  4. Step 4: Simplify right side
    717,462.86x = 391,256,615,523.30
  5. Step 5: Solve for x
    x = 391,256,615,523.30/717,462.86
  6. Step 6: Final answer
    x = 545,333.62

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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.