Home / 999,919.30-1,379,887.74-564,428.31

Finding the Fourth Proportional to 999,919.30, 1,379,887.74 and 564,428.31

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Solution

The fourth proportional to 999,919.30, 1,379,887.74 and 564,428.31 is: 778,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,919.30 : 1,379,887.74 = 564,428.31 : x
  2. Step 2: Convert to fraction form
    999,919.30/1,379,887.74 = 564,428.31/x
  3. Step 3: Cross multiply
    999,919.30x = 1,379,887.74 × 564,428.31
  4. Step 4: Simplify right side
    999,919.30x = 778,847,698,293.96
  5. Step 5: Solve for x
    x = 778,847,698,293.96/999,919.30
  6. Step 6: Final answer
    x = 778,910.56

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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.