Home / 1,209,029.79-1,668,461.18-665,153.94

Finding the Fourth Proportional to 1,209,029.79, 1,668,461.18 and 665,153.94

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Solution

The fourth proportional to 1,209,029.79, 1,668,461.18 and 665,153.94 is: 917,912.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,029.79 : 1,668,461.18 = 665,153.94 : x
  2. Step 2: Convert to fraction form
    1,209,029.79/1,668,461.18 = 665,153.94/x
  3. Step 3: Cross multiply
    1,209,029.79x = 1,668,461.18 × 665,153.94
  4. Step 4: Simplify right side
    1,209,029.79x = 1,109,783,524,288.28
  5. Step 5: Solve for x
    x = 1,109,783,524,288.28/1,209,029.79
  6. Step 6: Final answer
    x = 917,912.47

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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.