Home / 812,050.47-1,218,243.80-243,408.60

Finding the Fourth Proportional to 812,050.47, 1,218,243.80 and 243,408.60

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Solution

The fourth proportional to 812,050.47, 1,218,243.80 and 243,408.60 is: 365,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,050.47 : 1,218,243.80 = 243,408.60 : x
  2. Step 2: Convert to fraction form
    812,050.47/1,218,243.80 = 243,408.60/x
  3. Step 3: Cross multiply
    812,050.47x = 1,218,243.80 × 243,408.60
  4. Step 4: Simplify right side
    812,050.47x = 296,531,018,425.20
  5. Step 5: Solve for x
    x = 296,531,018,425.20/812,050.47
  6. Step 6: Final answer
    x = 365,163.29

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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.