Home / 1,208,143.79-1,667,281.26-664,320.98

Finding the Fourth Proportional to 1,208,143.79, 1,667,281.26 and 664,320.98

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Solution

The fourth proportional to 1,208,143.79, 1,667,281.26 and 664,320.98 is: 916,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,143.79 : 1,667,281.26 = 664,320.98 : x
  2. Step 2: Convert to fraction form
    1,208,143.79/1,667,281.26 = 664,320.98/x
  3. Step 3: Cross multiply
    1,208,143.79x = 1,667,281.26 × 664,320.98
  4. Step 4: Simplify right side
    1,208,143.79x = 1,107,609,920,578.83
  5. Step 5: Solve for x
    x = 1,107,609,920,578.83/1,208,143.79
  6. Step 6: Final answer
    x = 916,786.50

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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.