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Finding the Fourth Proportional to 831,649.75, 1,147,610.64 and 468,957.67

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Solution

The fourth proportional to 831,649.75, 1,147,610.64 and 468,957.67 is: 647,124.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,649.75 : 1,147,610.64 = 468,957.67 : x
  2. Step 2: Convert to fraction form
    831,649.75/1,147,610.64 = 468,957.67/x
  3. Step 3: Cross multiply
    831,649.75x = 1,147,610.64 × 468,957.67
  4. Step 4: Simplify right side
    831,649.75x = 538,180,811,801.61
  5. Step 5: Solve for x
    x = 538,180,811,801.61/831,649.75
  6. Step 6: Final answer
    x = 647,124.36

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1.5x scale

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.