Home / 1,378,554.40-2,067,832.35-431,999.20

Finding the Fourth Proportional to 1,378,554.40, 2,067,832.35 and 431,999.20

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Solution

The fourth proportional to 1,378,554.40, 2,067,832.35 and 431,999.20 is: 647,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,554.40 : 2,067,832.35 = 431,999.20 : x
  2. Step 2: Convert to fraction form
    1,378,554.40/2,067,832.35 = 431,999.20/x
  3. Step 3: Cross multiply
    1,378,554.40x = 2,067,832.35 × 431,999.20
  4. Step 4: Simplify right side
    1,378,554.40x = 893,301,920,934.12
  5. Step 5: Solve for x
    x = 893,301,920,934.12/1,378,554.40
  6. Step 6: Final answer
    x = 647,999.04

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1.5x scale

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.