Home / 1,171,484.06-1,755,220.10-639,378.45

Finding the Fourth Proportional to 1,171,484.06, 1,755,220.10 and 639,378.45

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Solution

The fourth proportional to 1,171,484.06, 1,755,220.10 and 639,378.45 is: 957,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,484.06 : 1,755,220.10 = 639,378.45 : x
  2. Step 2: Convert to fraction form
    1,171,484.06/1,755,220.10 = 639,378.45/x
  3. Step 3: Cross multiply
    1,171,484.06x = 1,755,220.10 × 639,378.45
  4. Step 4: Simplify right side
    1,171,484.06x = 1,122,249,903,749.95
  5. Step 5: Solve for x
    x = 1,122,249,903,749.95/1,171,484.06
  6. Step 6: Final answer
    x = 957,972.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.