Home / 889,742.78-1,228,402.80-685,408.94

Finding the Fourth Proportional to 889,742.78, 1,228,402.80 and 685,408.94

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Solution

The fourth proportional to 889,742.78, 1,228,402.80 and 685,408.94 is: 946,294.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,742.78 : 1,228,402.80 = 685,408.94 : x
  2. Step 2: Convert to fraction form
    889,742.78/1,228,402.80 = 685,408.94/x
  3. Step 3: Cross multiply
    889,742.78x = 1,228,402.80 × 685,408.94
  4. Step 4: Simplify right side
    889,742.78x = 841,958,261,041.03
  5. Step 5: Solve for x
    x = 841,958,261,041.03/889,742.78
  6. Step 6: Final answer
    x = 946,294.01

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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.