Home / 831,835.26-1,147,985.81-469,126.78

Finding the Fourth Proportional to 831,835.26, 1,147,985.81 and 469,126.78

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Solution

The fourth proportional to 831,835.26, 1,147,985.81 and 469,126.78 is: 647,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,835.26 : 1,147,985.81 = 469,126.78 : x
  2. Step 2: Convert to fraction form
    831,835.26/1,147,985.81 = 469,126.78/x
  3. Step 3: Cross multiply
    831,835.26x = 1,147,985.81 × 469,126.78
  4. Step 4: Simplify right side
    831,835.26x = 538,550,886,530.99
  5. Step 5: Solve for x
    x = 538,550,886,530.99/831,835.26
  6. Step 6: Final answer
    x = 647,424.93

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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.