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Finding the Fourth Proportional to 888,470.12, 1,332,704.11 and 289,430.30

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Solution

The fourth proportional to 888,470.12, 1,332,704.11 and 289,430.30 is: 434,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,470.12 : 1,332,704.11 = 289,430.30 : x
  2. Step 2: Convert to fraction form
    888,470.12/1,332,704.11 = 289,430.30/x
  3. Step 3: Cross multiply
    888,470.12x = 1,332,704.11 × 289,430.30
  4. Step 4: Simplify right side
    888,470.12x = 385,724,950,368.53
  5. Step 5: Solve for x
    x = 385,724,950,368.53/888,470.12
  6. Step 6: Final answer
    x = 434,145.10

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1.5x scale

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.