Home / 1,122,135.35-1,548,548.53-638,700.52

Finding the Fourth Proportional to 1,122,135.35, 1,548,548.53 and 638,700.52

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Solution

The fourth proportional to 1,122,135.35, 1,548,548.53 and 638,700.52 is: 881,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,135.35 : 1,548,548.53 = 638,700.52 : x
  2. Step 2: Convert to fraction form
    1,122,135.35/1,548,548.53 = 638,700.52/x
  3. Step 3: Cross multiply
    1,122,135.35x = 1,548,548.53 × 638,700.52
  4. Step 4: Simplify right side
    1,122,135.35x = 989,058,748,029.04
  5. Step 5: Solve for x
    x = 989,058,748,029.04/1,122,135.35
  6. Step 6: Final answer
    x = 881,407.71

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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.