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Finding the Fourth Proportional to 869,900.20, 1,303,295.10 and 711,269.80

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Solution

The fourth proportional to 869,900.20, 1,303,295.10 and 711,269.80 is: 1,065,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,900.20 : 1,303,295.10 = 711,269.80 : x
  2. Step 2: Convert to fraction form
    869,900.20/1,303,295.10 = 711,269.80/x
  3. Step 3: Cross multiply
    869,900.20x = 1,303,295.10 × 711,269.80
  4. Step 4: Simplify right side
    869,900.20x = 926,994,445,117.98
  5. Step 5: Solve for x
    x = 926,994,445,117.98/869,900.20
  6. Step 6: Final answer
    x = 1,065,633.10

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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.