Home / 1,078,990.86-1,488,785.04-620,016.74

Finding the Fourth Proportional to 1,078,990.86, 1,488,785.04 and 620,016.74

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Solution

The fourth proportional to 1,078,990.86, 1,488,785.04 and 620,016.74 is: 855,495.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,990.86 : 1,488,785.04 = 620,016.74 : x
  2. Step 2: Convert to fraction form
    1,078,990.86/1,488,785.04 = 620,016.74/x
  3. Step 3: Cross multiply
    1,078,990.86x = 1,488,785.04 × 620,016.74
  4. Step 4: Simplify right side
    1,078,990.86x = 923,071,647,061.57
  5. Step 5: Solve for x
    x = 923,071,647,061.57/1,078,990.86
  6. Step 6: Final answer
    x = 855,495.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.