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Finding the Fourth Proportional to 881,007.90, 1,215,866.43 and 499,102.62

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Solution

The fourth proportional to 881,007.90, 1,215,866.43 and 499,102.62 is: 688,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,007.90 : 1,215,866.43 = 499,102.62 : x
  2. Step 2: Convert to fraction form
    881,007.90/1,215,866.43 = 499,102.62/x
  3. Step 3: Cross multiply
    881,007.90x = 1,215,866.43 × 499,102.62
  4. Step 4: Simplify right side
    881,007.90x = 606,842,120,783.05
  5. Step 5: Solve for x
    x = 606,842,120,783.05/881,007.90
  6. Step 6: Final answer
    x = 688,804.40

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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.