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Finding the Fourth Proportional to 483,077.80, 724,616.70 and 305,007.40

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Solution

The fourth proportional to 483,077.80, 724,616.70 and 305,007.40 is: 457,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,077.80 : 724,616.70 = 305,007.40 : x
  2. Step 2: Convert to fraction form
    483,077.80/724,616.70 = 305,007.40/x
  3. Step 3: Cross multiply
    483,077.80x = 724,616.70 × 305,007.40
  4. Step 4: Simplify right side
    483,077.80x = 221,013,455,663.58
  5. Step 5: Solve for x
    x = 221,013,455,663.58/483,077.80
  6. Step 6: Final answer
    x = 457,511.10

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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.