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Finding the Fourth Proportional to 484,826.40, 727,239.60 and 316,864.80

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Solution

The fourth proportional to 484,826.40, 727,239.60 and 316,864.80 is: 475,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,826.40 : 727,239.60 = 316,864.80 : x
  2. Step 2: Convert to fraction form
    484,826.40/727,239.60 = 316,864.80/x
  3. Step 3: Cross multiply
    484,826.40x = 727,239.60 × 316,864.80
  4. Step 4: Simplify right side
    484,826.40x = 230,436,630,406.08
  5. Step 5: Solve for x
    x = 230,436,630,406.08/484,826.40
  6. Step 6: Final answer
    x = 475,297.20

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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.