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Finding the Fourth Proportional to 893,643.78, 1,341,420.66 and 361,512.66

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Solution

The fourth proportional to 893,643.78, 1,341,420.66 and 361,512.66 is: 542,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,643.78 : 1,341,420.66 = 361,512.66 : x
  2. Step 2: Convert to fraction form
    893,643.78/1,341,420.66 = 361,512.66/x
  3. Step 3: Cross multiply
    893,643.78x = 1,341,420.66 × 361,512.66
  4. Step 4: Simplify right side
    893,643.78x = 484,940,550,975.56
  5. Step 5: Solve for x
    x = 484,940,550,975.56/893,643.78
  6. Step 6: Final answer
    x = 542,655.32

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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.