Home / 1,216,048.21-1,678,146.90-664,766.34

Finding the Fourth Proportional to 1,216,048.21, 1,678,146.90 and 664,766.34

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Solution

The fourth proportional to 1,216,048.21, 1,678,146.90 and 664,766.34 is: 917,377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,048.21 : 1,678,146.90 = 664,766.34 : x
  2. Step 2: Convert to fraction form
    1,216,048.21/1,678,146.90 = 664,766.34/x
  3. Step 3: Cross multiply
    1,216,048.21x = 1,678,146.90 × 664,766.34
  4. Step 4: Simplify right side
    1,216,048.21x = 1,115,575,572,695.35
  5. Step 5: Solve for x
    x = 1,115,575,572,695.35/1,216,048.21
  6. Step 6: Final answer
    x = 917,377.75

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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.