Home / 1,203,313.40-1,660,605.90-666,769.40

Finding the Fourth Proportional to 1,203,313.40, 1,660,605.90 and 666,769.40

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Solution

The fourth proportional to 1,203,313.40, 1,660,605.90 and 666,769.40 is: 920,160.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,313.40 : 1,660,605.90 = 666,769.40 : x
  2. Step 2: Convert to fraction form
    1,203,313.40/1,660,605.90 = 666,769.40/x
  3. Step 3: Cross multiply
    1,203,313.40x = 1,660,605.90 × 666,769.40
  4. Step 4: Simplify right side
    1,203,313.40x = 1,107,241,199,579.46
  5. Step 5: Solve for x
    x = 1,107,241,199,579.46/1,203,313.40
  6. Step 6: Final answer
    x = 920,160.28

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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.