Home / 572,718.96-789,823.98-389,231.28

Finding the Fourth Proportional to 572,718.96, 789,823.98 and 389,231.28

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Solution

The fourth proportional to 572,718.96, 789,823.98 and 389,231.28 is: 536,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,718.96 : 789,823.98 = 389,231.28 : x
  2. Step 2: Convert to fraction form
    572,718.96/789,823.98 = 389,231.28/x
  3. Step 3: Cross multiply
    572,718.96x = 789,823.98 × 389,231.28
  4. Step 4: Simplify right side
    572,718.96x = 307,424,198,710.09
  5. Step 5: Solve for x
    x = 307,424,198,710.09/572,718.96
  6. Step 6: Final answer
    x = 536,780.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.