Home / 1,038,621.40-1,557,786.30-328,721.20

Finding the Fourth Proportional to 1,038,621.40, 1,557,786.30 and 328,721.20

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Solution

The fourth proportional to 1,038,621.40, 1,557,786.30 and 328,721.20 is: 493,035.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,621.40 : 1,557,786.30 = 328,721.20 : x
  2. Step 2: Convert to fraction form
    1,038,621.40/1,557,786.30 = 328,721.20/x
  3. Step 3: Cross multiply
    1,038,621.40x = 1,557,786.30 × 328,721.20
  4. Step 4: Simplify right side
    1,038,621.40x = 512,077,381,879.56
  5. Step 5: Solve for x
    x = 512,077,381,879.56/1,038,621.40
  6. Step 6: Final answer
    x = 493,035.65

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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.