Home / 572,020.71-789,400.64-313,895.40

Finding the Fourth Proportional to 572,020.71, 789,400.64 and 313,895.40

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Solution

The fourth proportional to 572,020.71, 789,400.64 and 313,895.40 is: 433,182.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,020.71 : 789,400.64 = 313,895.40 : x
  2. Step 2: Convert to fraction form
    572,020.71/789,400.64 = 313,895.40/x
  3. Step 3: Cross multiply
    572,020.71x = 789,400.64 × 313,895.40
  4. Step 4: Simplify right side
    572,020.71x = 247,789,231,917.92
  5. Step 5: Solve for x
    x = 247,789,231,917.92/572,020.71
  6. Step 6: Final answer
    x = 433,182.27

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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.