Home / 1,218,189.02-1,681,080.45-674,313.11

Finding the Fourth Proportional to 1,218,189.02, 1,681,080.45 and 674,313.11

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Solution

The fourth proportional to 1,218,189.02, 1,681,080.45 and 674,313.11 is: 930,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,189.02 : 1,681,080.45 = 674,313.11 : x
  2. Step 2: Convert to fraction form
    1,218,189.02/1,681,080.45 = 674,313.11/x
  3. Step 3: Cross multiply
    1,218,189.02x = 1,681,080.45 × 674,313.11
  4. Step 4: Simplify right side
    1,218,189.02x = 1,133,574,586,399.70
  5. Step 5: Solve for x
    x = 1,133,574,586,399.70/1,218,189.02
  6. Step 6: Final answer
    x = 930,540.80

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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.