Home / 1,122,135.73-1,548,549.04-638,700.87

Finding the Fourth Proportional to 1,122,135.73, 1,548,549.04 and 638,700.87

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Solution

The fourth proportional to 1,122,135.73, 1,548,549.04 and 638,700.87 is: 881,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,135.73 : 1,548,549.04 = 638,700.87 : x
  2. Step 2: Convert to fraction form
    1,122,135.73/1,548,549.04 = 638,700.87/x
  3. Step 3: Cross multiply
    1,122,135.73x = 1,548,549.04 × 638,700.87
  4. Step 4: Simplify right side
    1,122,135.73x = 989,059,619,085.67
  5. Step 5: Solve for x
    x = 989,059,619,085.67/1,122,135.73
  6. Step 6: Final answer
    x = 881,408.19

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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.