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Finding the Fourth Proportional to 1,869,853.52, 2,807,269.32 and 1,264,674.80

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Solution

The fourth proportional to 1,869,853.52, 2,807,269.32 and 1,264,674.80 is: 1,898,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869,853.52 : 2,807,269.32 = 1,264,674.80 : x
  2. Step 2: Convert to fraction form
    1,869,853.52/2,807,269.32 = 1,264,674.80/x
  3. Step 3: Cross multiply
    1,869,853.52x = 2,807,269.32 × 1,264,674.80
  4. Step 4: Simplify right side
    1,869,853.52x = 3,550,282,765,817.14
  5. Step 5: Solve for x
    x = 3,550,282,765,817.14/1,869,853.52
  6. Step 6: Final answer
    x = 1,898,695.66

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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.