Home / 665,116.65-997,822.40-191,765.07

Finding the Fourth Proportional to 665,116.65, 997,822.40 and 191,765.07

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Solution

The fourth proportional to 665,116.65, 997,822.40 and 191,765.07 is: 287,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,116.65 : 997,822.40 = 191,765.07 : x
  2. Step 2: Convert to fraction form
    665,116.65/997,822.40 = 191,765.07/x
  3. Step 3: Cross multiply
    665,116.65x = 997,822.40 × 191,765.07
  4. Step 4: Simplify right side
    665,116.65x = 191,347,481,424.74
  5. Step 5: Solve for x
    x = 191,347,481,424.74/665,116.65
  6. Step 6: Final answer
    x = 287,690.11

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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.