Home / 1,378,337.32-2,067,504.36-431,781.76

Finding the Fourth Proportional to 1,378,337.32, 2,067,504.36 and 431,781.76

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Solution

The fourth proportional to 1,378,337.32, 2,067,504.36 and 431,781.76 is: 647,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,337.32 : 2,067,504.36 = 431,781.76 : x
  2. Step 2: Convert to fraction form
    1,378,337.32/2,067,504.36 = 431,781.76/x
  3. Step 3: Cross multiply
    1,378,337.32x = 2,067,504.36 × 431,781.76
  4. Step 4: Simplify right side
    1,378,337.32x = 892,710,671,368.47
  5. Step 5: Solve for x
    x = 892,710,671,368.47/1,378,337.32
  6. Step 6: Final answer
    x = 647,672.13

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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.