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Finding the Fourth Proportional to 717,803.70, 990,613.32 and 395,513.70

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Solution

The fourth proportional to 717,803.70, 990,613.32 and 395,513.70 is: 545,833.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,803.70 : 990,613.32 = 395,513.70 : x
  2. Step 2: Convert to fraction form
    717,803.70/990,613.32 = 395,513.70/x
  3. Step 3: Cross multiply
    717,803.70x = 990,613.32 × 395,513.70
  4. Step 4: Simplify right side
    717,803.70x = 391,801,139,462.48
  5. Step 5: Solve for x
    x = 391,801,139,462.48/717,803.70
  6. Step 6: Final answer
    x = 545,833.27

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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.