Home / 1,216,045.21-1,678,142.76-664,763.34

Finding the Fourth Proportional to 1,216,045.21, 1,678,142.76 and 664,763.34

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Solution

The fourth proportional to 1,216,045.21, 1,678,142.76 and 664,763.34 is: 917,373.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,045.21 : 1,678,142.76 = 664,763.34 : x
  2. Step 2: Convert to fraction form
    1,216,045.21/1,678,142.76 = 664,763.34/x
  3. Step 3: Cross multiply
    1,216,045.21x = 1,678,142.76 × 664,763.34
  4. Step 4: Simplify right side
    1,216,045.21x = 1,115,567,786,134.42
  5. Step 5: Solve for x
    x = 1,115,567,786,134.42/1,216,045.21
  6. Step 6: Final answer
    x = 917,373.61

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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.