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Finding the Fourth Proportional to 618,400.90, 926,536.03 and 483,412.42

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Solution

The fourth proportional to 618,400.90, 926,536.03 and 483,412.42 is: 724,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,400.90 : 926,536.03 = 483,412.42 : x
  2. Step 2: Convert to fraction form
    618,400.90/926,536.03 = 483,412.42/x
  3. Step 3: Cross multiply
    618,400.90x = 926,536.03 × 483,412.42
  4. Step 4: Simplify right side
    618,400.90x = 447,899,024,479.49
  5. Step 5: Solve for x
    x = 447,899,024,479.49/618,400.90
  6. Step 6: Final answer
    x = 724,285.85

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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.