Home / 831,688.16-1,147,742.86-469,119.22

Finding the Fourth Proportional to 831,688.16, 1,147,742.86 and 469,119.22

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Solution

The fourth proportional to 831,688.16, 1,147,742.86 and 469,119.22 is: 647,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,688.16 : 1,147,742.86 = 469,119.22 : x
  2. Step 2: Convert to fraction form
    831,688.16/1,147,742.86 = 469,119.22/x
  3. Step 3: Cross multiply
    831,688.16x = 1,147,742.86 × 469,119.22
  4. Step 4: Simplify right side
    831,688.16x = 538,428,235,243.77
  5. Step 5: Solve for x
    x = 538,428,235,243.77/831,688.16
  6. Step 6: Final answer
    x = 647,391.97

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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.