Home / 1,209,037.54-1,668,471.88-665,161.70

Finding the Fourth Proportional to 1,209,037.54, 1,668,471.88 and 665,161.70

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Solution

The fourth proportional to 1,209,037.54, 1,668,471.88 and 665,161.70 is: 917,923.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,037.54 : 1,668,471.88 = 665,161.70 : x
  2. Step 2: Convert to fraction form
    1,209,037.54/1,668,471.88 = 665,161.70/x
  3. Step 3: Cross multiply
    1,209,037.54x = 1,668,471.88 × 665,161.70
  4. Step 4: Simplify right side
    1,209,037.54x = 1,109,803,592,103.00
  5. Step 5: Solve for x
    x = 1,109,803,592,103.00/1,209,037.54
  6. Step 6: Final answer
    x = 917,923.19

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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.