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Finding the Fourth Proportional to 888,820.86, 1,333,242.62 and 312,420.88

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Solution

The fourth proportional to 888,820.86, 1,333,242.62 and 312,420.88 is: 468,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,820.86 : 1,333,242.62 = 312,420.88 : x
  2. Step 2: Convert to fraction form
    888,820.86/1,333,242.62 = 312,420.88/x
  3. Step 3: Cross multiply
    888,820.86x = 1,333,242.62 × 312,420.88
  4. Step 4: Simplify right side
    888,820.86x = 416,532,833,869.93
  5. Step 5: Solve for x
    x = 416,532,833,869.93/888,820.86
  6. Step 6: Final answer
    x = 468,635.30

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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.