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Finding the Fourth Proportional to 1,765,936.40, 2,648,904.60 and 867,954.20

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Solution

The fourth proportional to 1,765,936.40, 2,648,904.60 and 867,954.20 is: 1,301,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765,936.40 : 2,648,904.60 = 867,954.20 : x
  2. Step 2: Convert to fraction form
    1,765,936.40/2,648,904.60 = 867,954.20/x
  3. Step 3: Cross multiply
    1,765,936.40x = 2,648,904.60 × 867,954.20
  4. Step 4: Simplify right side
    1,765,936.40x = 2,299,127,872,969.32
  5. Step 5: Solve for x
    x = 2,299,127,872,969.32/1,765,936.40
  6. Step 6: Final answer
    x = 1,301,931.30

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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.