Home / 668,845.20-1,003,267.80-313,895.10

Finding the Fourth Proportional to 668,845.20, 1,003,267.80 and 313,895.10

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Solution

The fourth proportional to 668,845.20, 1,003,267.80 and 313,895.10 is: 470,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,845.20 : 1,003,267.80 = 313,895.10 : x
  2. Step 2: Convert to fraction form
    668,845.20/1,003,267.80 = 313,895.10/x
  3. Step 3: Cross multiply
    668,845.20x = 1,003,267.80 × 313,895.10
  4. Step 4: Simplify right side
    668,845.20x = 314,920,846,407.78
  5. Step 5: Solve for x
    x = 314,920,846,407.78/668,845.20
  6. Step 6: Final answer
    x = 470,842.65

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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.