Home / 831,857.70-1,248,218.55-388,625.70

Finding the Fourth Proportional to 831,857.70, 1,248,218.55 and 388,625.70

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Solution

The fourth proportional to 831,857.70, 1,248,218.55 and 388,625.70 is: 583,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,857.70 : 1,248,218.55 = 388,625.70 : x
  2. Step 2: Convert to fraction form
    831,857.70/1,248,218.55 = 388,625.70/x
  3. Step 3: Cross multiply
    831,857.70x = 1,248,218.55 × 388,625.70
  4. Step 4: Simplify right side
    831,857.70x = 485,089,807,746.74
  5. Step 5: Solve for x
    x = 485,089,807,746.74/831,857.70
  6. Step 6: Final answer
    x = 583,140.37

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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.