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Finding the Fourth Proportional to 1,974,909.05, 2,961,522.42 and 775,990.35

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Solution

The fourth proportional to 1,974,909.05, 2,961,522.42 and 775,990.35 is: 1,163,655.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,909.05 : 2,961,522.42 = 775,990.35 : x
  2. Step 2: Convert to fraction form
    1,974,909.05/2,961,522.42 = 775,990.35/x
  3. Step 3: Cross multiply
    1,974,909.05x = 2,961,522.42 × 775,990.35
  4. Step 4: Simplify right side
    1,974,909.05x = 2,298,112,819,228.65
  5. Step 5: Solve for x
    x = 2,298,112,819,228.65/1,974,909.05
  6. Step 6: Final answer
    x = 1,163,655.01

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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.