Home / 1,209,006.96-1,668,429.54-665,131.02

Finding the Fourth Proportional to 1,209,006.96, 1,668,429.54 and 665,131.02

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Solution

The fourth proportional to 1,209,006.96, 1,668,429.54 and 665,131.02 is: 917,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,006.96 : 1,668,429.54 = 665,131.02 : x
  2. Step 2: Convert to fraction form
    1,209,006.96/1,668,429.54 = 665,131.02/x
  3. Step 3: Cross multiply
    1,209,006.96x = 1,668,429.54 × 665,131.02
  4. Step 4: Simplify right side
    1,209,006.96x = 1,109,724,241,738.33
  5. Step 5: Solve for x
    x = 1,109,724,241,738.33/1,209,006.96
  6. Step 6: Final answer
    x = 917,880.77

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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.