Home / 1,216,261.17-1,678,487.67-807,658.43

Finding the Fourth Proportional to 1,216,261.17, 1,678,487.67 and 807,658.43

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Solution

The fourth proportional to 1,216,261.17, 1,678,487.67 and 807,658.43 is: 1,114,600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,261.17 : 1,678,487.67 = 807,658.43 : x
  2. Step 2: Convert to fraction form
    1,216,261.17/1,678,487.67 = 807,658.43/x
  3. Step 3: Cross multiply
    1,216,261.17x = 1,678,487.67 × 807,658.43
  4. Step 4: Simplify right side
    1,216,261.17x = 1,355,644,707,934.12
  5. Step 5: Solve for x
    x = 1,355,644,707,934.12/1,216,261.17
  6. Step 6: Final answer
    x = 1,114,600.01

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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.