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Finding the Fourth Proportional to 888,690.80, 1,333,246.80 and 289,655.30

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Solution

The fourth proportional to 888,690.80, 1,333,246.80 and 289,655.30 is: 434,551.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,690.80 : 1,333,246.80 = 289,655.30 : x
  2. Step 2: Convert to fraction form
    888,690.80/1,333,246.80 = 289,655.30/x
  3. Step 3: Cross multiply
    888,690.80x = 1,333,246.80 × 289,655.30
  4. Step 4: Simplify right side
    888,690.80x = 386,182,001,828.04
  5. Step 5: Solve for x
    x = 386,182,001,828.04/888,690.80
  6. Step 6: Final answer
    x = 434,551.59

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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.