Home / 1,209,057.50-1,668,499.27-665,181.61

Finding the Fourth Proportional to 1,209,057.50, 1,668,499.27 and 665,181.61

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Solution

The fourth proportional to 1,209,057.50, 1,668,499.27 and 665,181.61 is: 917,950.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,057.50 : 1,668,499.27 = 665,181.61 : x
  2. Step 2: Convert to fraction form
    1,209,057.50/1,668,499.27 = 665,181.61/x
  3. Step 3: Cross multiply
    1,209,057.50x = 1,668,499.27 × 665,181.61
  4. Step 4: Simplify right side
    1,209,057.50x = 1,109,855,024,868.22
  5. Step 5: Solve for x
    x = 1,109,855,024,868.22/1,209,057.50
  6. Step 6: Final answer
    x = 917,950.57

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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.