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Finding the Fourth Proportional to 831,904.16, 1,148,028 and 469,404.88

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Solution

The fourth proportional to 831,904.16, 1,148,028 and 469,404.88 is: 647,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,904.16 : 1,148,028 = 469,404.88 : x
  2. Step 2: Convert to fraction form
    831,904.16/1,148,028 = 469,404.88/x
  3. Step 3: Cross multiply
    831,904.16x = 1,148,028 × 469,404.88
  4. Step 4: Simplify right side
    831,904.16x = 538,889,945,576.64
  5. Step 5: Solve for x
    x = 538,889,945,576.64/831,904.16
  6. Step 6: Final answer
    x = 647,778.88

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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.