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Finding the Fourth Proportional to 618,520.49, 853,612.61 and 360,384.02

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Solution

The fourth proportional to 618,520.49, 853,612.61 and 360,384.02 is: 497,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,520.49 : 853,612.61 = 360,384.02 : x
  2. Step 2: Convert to fraction form
    618,520.49/853,612.61 = 360,384.02/x
  3. Step 3: Cross multiply
    618,520.49x = 853,612.61 × 360,384.02
  4. Step 4: Simplify right side
    618,520.49x = 307,628,337,844.51
  5. Step 5: Solve for x
    x = 307,628,337,844.51/618,520.49
  6. Step 6: Final answer
    x = 497,361.60

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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.