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Finding the Fourth Proportional to 1,765,928.40, 2,648,892.60 and 867,946.20

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Solution

The fourth proportional to 1,765,928.40, 2,648,892.60 and 867,946.20 is: 1,301,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765,928.40 : 2,648,892.60 = 867,946.20 : x
  2. Step 2: Convert to fraction form
    1,765,928.40/2,648,892.60 = 867,946.20/x
  3. Step 3: Cross multiply
    1,765,928.40x = 2,648,892.60 × 867,946.20
  4. Step 4: Simplify right side
    1,765,928.40x = 2,299,096,266,378.12
  5. Step 5: Solve for x
    x = 2,299,096,266,378.12/1,765,928.40
  6. Step 6: Final answer
    x = 1,301,919.30

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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.