Home / 1,038,991.30-1,559,471.10-640,410.55

Finding the Fourth Proportional to 1,038,991.30, 1,559,471.10 and 640,410.55

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Solution

The fourth proportional to 1,038,991.30, 1,559,471.10 and 640,410.55 is: 961,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,991.30 : 1,559,471.10 = 640,410.55 : x
  2. Step 2: Convert to fraction form
    1,038,991.30/1,559,471.10 = 640,410.55/x
  3. Step 3: Cross multiply
    1,038,991.30x = 1,559,471.10 × 640,410.55
  4. Step 4: Simplify right side
    1,038,991.30x = 998,701,744,860.11
  5. Step 5: Solve for x
    x = 998,701,744,860.11/1,038,991.30
  6. Step 6: Final answer
    x = 961,222.43

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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.