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Finding the Fourth Proportional to 618,016.60, 926,150.10 and 542,783.80

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Solution

The fourth proportional to 618,016.60, 926,150.10 and 542,783.80 is: 813,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,016.60 : 926,150.10 = 542,783.80 : x
  2. Step 2: Convert to fraction form
    618,016.60/926,150.10 = 542,783.80/x
  3. Step 3: Cross multiply
    618,016.60x = 926,150.10 × 542,783.80
  4. Step 4: Simplify right side
    618,016.60x = 502,699,270,648.38
  5. Step 5: Solve for x
    x = 502,699,270,648.38/618,016.60
  6. Step 6: Final answer
    x = 813,407.39

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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.