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Finding the Fourth Proportional to 771,269.60, 1,154,571.60 and 687,288.80

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Solution

The fourth proportional to 771,269.60, 1,154,571.60 and 687,288.80 is: 1,028,854.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,269.60 : 1,154,571.60 = 687,288.80 : x
  2. Step 2: Convert to fraction form
    771,269.60/1,154,571.60 = 687,288.80/x
  3. Step 3: Cross multiply
    771,269.60x = 1,154,571.60 × 687,288.80
  4. Step 4: Simplify right side
    771,269.60x = 793,524,129,478.08
  5. Step 5: Solve for x
    x = 793,524,129,478.08/771,269.60
  6. Step 6: Final answer
    x = 1,028,854.41

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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.