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Finding the Fourth Proportional to 484,712.40, 726,631.20 and 316,313.40

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Solution

The fourth proportional to 484,712.40, 726,631.20 and 316,313.40 is: 474,184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,712.40 : 726,631.20 = 316,313.40 : x
  2. Step 2: Convert to fraction form
    484,712.40/726,631.20 = 316,313.40/x
  3. Step 3: Cross multiply
    484,712.40x = 726,631.20 × 316,313.40
  4. Step 4: Simplify right side
    484,712.40x = 229,843,185,418.08
  5. Step 5: Solve for x
    x = 229,843,185,418.08/484,712.40
  6. Step 6: Final answer
    x = 474,184.66

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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.