Home / 831,688.16-1,147,742.87-469,119.23

Finding the Fourth Proportional to 831,688.16, 1,147,742.87 and 469,119.23

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Solution

The fourth proportional to 831,688.16, 1,147,742.87 and 469,119.23 is: 647,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,688.16 : 1,147,742.87 = 469,119.23 : x
  2. Step 2: Convert to fraction form
    831,688.16/1,147,742.87 = 469,119.23/x
  3. Step 3: Cross multiply
    831,688.16x = 1,147,742.87 × 469,119.23
  4. Step 4: Simplify right side
    831,688.16x = 538,428,243,328.08
  5. Step 5: Solve for x
    x = 538,428,243,328.08/831,688.16
  6. Step 6: Final answer
    x = 647,391.98

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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.