Home / 872,763.94-1,204,421.70-490,787.38

Finding the Fourth Proportional to 872,763.94, 1,204,421.70 and 490,787.38

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Solution

The fourth proportional to 872,763.94, 1,204,421.70 and 490,787.38 is: 677,290.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,763.94 : 1,204,421.70 = 490,787.38 : x
  2. Step 2: Convert to fraction form
    872,763.94/1,204,421.70 = 490,787.38/x
  3. Step 3: Cross multiply
    872,763.94x = 1,204,421.70 × 490,787.38
  4. Step 4: Simplify right side
    872,763.94x = 591,114,970,558.15
  5. Step 5: Solve for x
    x = 591,114,970,558.15/872,763.94
  6. Step 6: Final answer
    x = 677,290.78

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1.5x scale

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.