Home / 993,498.32-1,489,790.64-319,455.20

Finding the Fourth Proportional to 993,498.32, 1,489,790.64 and 319,455.20

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Solution

The fourth proportional to 993,498.32, 1,489,790.64 and 319,455.20 is: 479,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,498.32 : 1,489,790.64 = 319,455.20 : x
  2. Step 2: Convert to fraction form
    993,498.32/1,489,790.64 = 319,455.20/x
  3. Step 3: Cross multiply
    993,498.32x = 1,489,790.64 × 319,455.20
  4. Step 4: Simplify right side
    993,498.32x = 475,921,366,859.33
  5. Step 5: Solve for x
    x = 475,921,366,859.33/993,498.32
  6. Step 6: Final answer
    x = 479,035.91

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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.