Home / 999,920.59-1,379,889.52-564,429.62

Finding the Fourth Proportional to 999,920.59, 1,379,889.52 and 564,429.62

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Solution

The fourth proportional to 999,920.59, 1,379,889.52 and 564,429.62 is: 778,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,920.59 : 1,379,889.52 = 564,429.62 : x
  2. Step 2: Convert to fraction form
    999,920.59/1,379,889.52 = 564,429.62/x
  3. Step 3: Cross multiply
    999,920.59x = 1,379,889.52 × 564,429.62
  4. Step 4: Simplify right side
    999,920.59x = 778,850,519,454.23
  5. Step 5: Solve for x
    x = 778,850,519,454.23/999,920.59
  6. Step 6: Final answer
    x = 778,912.37

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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.