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Finding the Fourth Proportional to 618,603.76, 927,643.02 and 219,345.04

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Solution

The fourth proportional to 618,603.76, 927,643.02 and 219,345.04 is: 328,924.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,603.76 : 927,643.02 = 219,345.04 : x
  2. Step 2: Convert to fraction form
    618,603.76/927,643.02 = 219,345.04/x
  3. Step 3: Cross multiply
    618,603.76x = 927,643.02 × 219,345.04
  4. Step 4: Simplify right side
    618,603.76x = 203,473,895,327.62
  5. Step 5: Solve for x
    x = 203,473,895,327.62/618,603.76
  6. Step 6: Final answer
    x = 328,924.44

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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.