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Finding the Fourth Proportional to 978,038.67, 1,466,900.56 and 267,900.74

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Solution

The fourth proportional to 978,038.67, 1,466,900.56 and 267,900.74 is: 401,807.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,038.67 : 1,466,900.56 = 267,900.74 : x
  2. Step 2: Convert to fraction form
    978,038.67/1,466,900.56 = 267,900.74/x
  3. Step 3: Cross multiply
    978,038.67x = 1,466,900.56 × 267,900.74
  4. Step 4: Simplify right side
    978,038.67x = 392,983,745,530.41
  5. Step 5: Solve for x
    x = 392,983,745,530.41/978,038.67
  6. Step 6: Final answer
    x = 401,807.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.