Home / 1,585,064.34-2,188,237.41-1,221,691.86

Finding the Fourth Proportional to 1,585,064.34, 2,188,237.41 and 1,221,691.86

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Solution

The fourth proportional to 1,585,064.34, 2,188,237.41 and 1,221,691.86 is: 1,686,588.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585,064.34 : 2,188,237.41 = 1,221,691.86 : x
  2. Step 2: Convert to fraction form
    1,585,064.34/2,188,237.41 = 1,221,691.86/x
  3. Step 3: Cross multiply
    1,585,064.34x = 2,188,237.41 × 1,221,691.86
  4. Step 4: Simplify right side
    1,585,064.34x = 2,673,351,831,544.48
  5. Step 5: Solve for x
    x = 2,673,351,831,544.48/1,585,064.34
  6. Step 6: Final answer
    x = 1,686,588.84

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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.