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Finding the Fourth Proportional to 1,299,739.76, 1,948,859.21 and 400,940.17

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Solution

The fourth proportional to 1,299,739.76, 1,948,859.21 and 400,940.17 is: 601,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,739.76 : 1,948,859.21 = 400,940.17 : x
  2. Step 2: Convert to fraction form
    1,299,739.76/1,948,859.21 = 400,940.17/x
  3. Step 3: Cross multiply
    1,299,739.76x = 1,948,859.21 × 400,940.17
  4. Step 4: Simplify right side
    1,299,739.76x = 781,375,931,214.47
  5. Step 5: Solve for x
    x = 781,375,931,214.47/1,299,739.76
  6. Step 6: Final answer
    x = 601,178.76

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