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Finding the Fourth Proportional to 1,868,404.80, 2,802,607.20 and 1,850,690.10

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Solution

The fourth proportional to 1,868,404.80, 2,802,607.20 and 1,850,690.10 is: 2,776,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,404.80 : 2,802,607.20 = 1,850,690.10 : x
  2. Step 2: Convert to fraction form
    1,868,404.80/2,802,607.20 = 1,850,690.10/x
  3. Step 3: Cross multiply
    1,868,404.80x = 2,802,607.20 × 1,850,690.10
  4. Step 4: Simplify right side
    1,868,404.80x = 5,186,757,399,228.72
  5. Step 5: Solve for x
    x = 5,186,757,399,228.72/1,868,404.80
  6. Step 6: Final answer
    x = 2,776,035.15

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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.