Home / 1,391,073.12-2,086,368.75-418,423.32

Finding the Fourth Proportional to 1,391,073.12, 2,086,368.75 and 418,423.32

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Solution

The fourth proportional to 1,391,073.12, 2,086,368.75 and 418,423.32 is: 627,562.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,073.12 : 2,086,368.75 = 418,423.32 : x
  2. Step 2: Convert to fraction form
    1,391,073.12/2,086,368.75 = 418,423.32/x
  3. Step 3: Cross multiply
    1,391,073.12x = 2,086,368.75 × 418,423.32
  4. Step 4: Simplify right side
    1,391,073.12x = 872,985,339,119.25
  5. Step 5: Solve for x
    x = 872,985,339,119.25/1,391,073.12
  6. Step 6: Final answer
    x = 627,562.51

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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.