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Finding the Fourth Proportional to 618,603.71, 853,659.16 and 360,464.51

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Solution

The fourth proportional to 618,603.71, 853,659.16 and 360,464.51 is: 497,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,603.71 : 853,659.16 = 360,464.51 : x
  2. Step 2: Convert to fraction form
    618,603.71/853,659.16 = 360,464.51/x
  3. Step 3: Cross multiply
    618,603.71x = 853,659.16 × 360,464.51
  4. Step 4: Simplify right side
    618,603.71x = 307,713,832,049.40
  5. Step 5: Solve for x
    x = 307,713,832,049.40/618,603.71
  6. Step 6: Final answer
    x = 497,432.90

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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.