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Finding the Fourth Proportional to 484,988.32, 669,317.52 and 294,009.76

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Solution

The fourth proportional to 484,988.32, 669,317.52 and 294,009.76 is: 405,753.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,988.32 : 669,317.52 = 294,009.76 : x
  2. Step 2: Convert to fraction form
    484,988.32/669,317.52 = 294,009.76/x
  3. Step 3: Cross multiply
    484,988.32x = 669,317.52 × 294,009.76
  4. Step 4: Simplify right side
    484,988.32x = 196,785,883,419.00
  5. Step 5: Solve for x
    x = 196,785,883,419.00/484,988.32
  6. Step 6: Final answer
    x = 405,753.86

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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.