Home / 831,715.16-1,147,765.56-469,137.89

Finding the Fourth Proportional to 831,715.16, 1,147,765.56 and 469,137.89

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Solution

The fourth proportional to 831,715.16, 1,147,765.56 and 469,137.89 is: 647,409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,715.16 : 1,147,765.56 = 469,137.89 : x
  2. Step 2: Convert to fraction form
    831,715.16/1,147,765.56 = 469,137.89/x
  3. Step 3: Cross multiply
    831,715.16x = 1,147,765.56 × 469,137.89
  4. Step 4: Simplify right side
    831,715.16x = 538,460,313,033.07
  5. Step 5: Solve for x
    x = 538,460,313,033.07/831,715.16
  6. Step 6: Final answer
    x = 647,409.52

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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.