Home / 1,208,139.55-1,667,187.74-664,242.98

Finding the Fourth Proportional to 1,208,139.55, 1,667,187.74 and 664,242.98

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Solution

The fourth proportional to 1,208,139.55, 1,667,187.74 and 664,242.98 is: 916,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,139.55 : 1,667,187.74 = 664,242.98 : x
  2. Step 2: Convert to fraction form
    1,208,139.55/1,667,187.74 = 664,242.98/x
  3. Step 3: Cross multiply
    1,208,139.55x = 1,667,187.74 × 664,242.98
  4. Step 4: Simplify right side
    1,208,139.55x = 1,107,417,752,637.07
  5. Step 5: Solve for x
    x = 1,107,417,752,637.07/1,208,139.55
  6. Step 6: Final answer
    x = 916,630.66

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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.