Home / 1,378,534.40-2,067,802.32-431,979.20

Finding the Fourth Proportional to 1,378,534.40, 2,067,802.32 and 431,979.20

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Solution

The fourth proportional to 1,378,534.40, 2,067,802.32 and 431,979.20 is: 647,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,534.40 : 2,067,802.32 = 431,979.20 : x
  2. Step 2: Convert to fraction form
    1,378,534.40/2,067,802.32 = 431,979.20/x
  3. Step 3: Cross multiply
    1,378,534.40x = 2,067,802.32 × 431,979.20
  4. Step 4: Simplify right side
    1,378,534.40x = 893,247,591,951.74
  5. Step 5: Solve for x
    x = 893,247,591,951.74/1,378,534.40
  6. Step 6: Final answer
    x = 647,969.03

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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.