Home / 641,927.80-885,849.55-355,441.74

Finding the Fourth Proportional to 641,927.80, 885,849.55 and 355,441.74

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Solution

The fourth proportional to 641,927.80, 885,849.55 and 355,441.74 is: 490,503.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,927.80 : 885,849.55 = 355,441.74 : x
  2. Step 2: Convert to fraction form
    641,927.80/885,849.55 = 355,441.74/x
  3. Step 3: Cross multiply
    641,927.80x = 885,849.55 × 355,441.74
  4. Step 4: Simplify right side
    641,927.80x = 314,867,901,219.68
  5. Step 5: Solve for x
    x = 314,867,901,219.68/641,927.80
  6. Step 6: Final answer
    x = 490,503.61

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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.