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Finding the Fourth Proportional to 618,089.58, 926,943.62 and 218,638.49

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Solution

The fourth proportional to 618,089.58, 926,943.62 and 218,638.49 is: 327,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,089.58 : 926,943.62 = 218,638.49 : x
  2. Step 2: Convert to fraction form
    618,089.58/926,943.62 = 218,638.49/x
  3. Step 3: Cross multiply
    618,089.58x = 926,943.62 × 218,638.49
  4. Step 4: Simplify right side
    618,089.58x = 202,665,547,664.02
  5. Step 5: Solve for x
    x = 202,665,547,664.02/618,089.58
  6. Step 6: Final answer
    x = 327,890.25

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1.5x scale

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.