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Finding the Fourth Proportional to 717,900.17, 990,708.77 and 395,621.82

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Solution

The fourth proportional to 717,900.17, 990,708.77 and 395,621.82 is: 545,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,900.17 : 990,708.77 = 395,621.82 : x
  2. Step 2: Convert to fraction form
    717,900.17/990,708.77 = 395,621.82/x
  3. Step 3: Cross multiply
    717,900.17x = 990,708.77 × 395,621.82
  4. Step 4: Simplify right side
    717,900.17x = 391,946,007,666.42
  5. Step 5: Solve for x
    x = 391,946,007,666.42/717,900.17
  6. Step 6: Final answer
    x = 545,961.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.