Home / 1,991,915.08-2,986,991.32-571,641.64

Finding the Fourth Proportional to 1,991,915.08, 2,986,991.32 and 571,641.64

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Solution

The fourth proportional to 1,991,915.08, 2,986,991.32 and 571,641.64 is: 857,209.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,915.08 : 2,986,991.32 = 571,641.64 : x
  2. Step 2: Convert to fraction form
    1,991,915.08/2,986,991.32 = 571,641.64/x
  3. Step 3: Cross multiply
    1,991,915.08x = 2,986,991.32 × 571,641.64
  4. Step 4: Simplify right side
    1,991,915.08x = 1,707,488,616,830.56
  5. Step 5: Solve for x
    x = 1,707,488,616,830.56/1,991,915.08
  6. Step 6: Final answer
    x = 857,209.54

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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.