Home / 1,216,887.30-1,679,236.45-665,494.11

Finding the Fourth Proportional to 1,216,887.30, 1,679,236.45 and 665,494.11

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Solution

The fourth proportional to 1,216,887.30, 1,679,236.45 and 665,494.11 is: 918,344.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,887.30 : 1,679,236.45 = 665,494.11 : x
  2. Step 2: Convert to fraction form
    1,216,887.30/1,679,236.45 = 665,494.11/x
  3. Step 3: Cross multiply
    1,216,887.30x = 1,679,236.45 × 665,494.11
  4. Step 4: Simplify right side
    1,216,887.30x = 1,117,521,965,108.57
  5. Step 5: Solve for x
    x = 1,117,521,965,108.57/1,216,887.30
  6. Step 6: Final answer
    x = 918,344.67

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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.