Home / 1,452,978.66-2,178,712.73-428,174.49

Finding the Fourth Proportional to 1,452,978.66, 2,178,712.73 and 428,174.49

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Solution

The fourth proportional to 1,452,978.66, 2,178,712.73 and 428,174.49 is: 642,039.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452,978.66 : 2,178,712.73 = 428,174.49 : x
  2. Step 2: Convert to fraction form
    1,452,978.66/2,178,712.73 = 428,174.49/x
  3. Step 3: Cross multiply
    1,452,978.66x = 2,178,712.73 × 428,174.49
  4. Step 4: Simplify right side
    1,452,978.66x = 932,869,212,024.26
  5. Step 5: Solve for x
    x = 932,869,212,024.26/1,452,978.66
  6. Step 6: Final answer
    x = 642,039.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.