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Finding the Fourth Proportional to 719,100.80, 992,556.48 and 417,392

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Solution

The fourth proportional to 719,100.80, 992,556.48 and 417,392 is: 576,115.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,100.80 : 992,556.48 = 417,392 : x
  2. Step 2: Convert to fraction form
    719,100.80/992,556.48 = 417,392/x
  3. Step 3: Cross multiply
    719,100.80x = 992,556.48 × 417,392
  4. Step 4: Simplify right side
    719,100.80x = 414,285,134,300.16
  5. Step 5: Solve for x
    x = 414,285,134,300.16/719,100.80
  6. Step 6: Final answer
    x = 576,115.52

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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.