Home / 641,728.04-885,595.14-351,334.76

Finding the Fourth Proportional to 641,728.04, 885,595.14 and 351,334.76

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Solution

The fourth proportional to 641,728.04, 885,595.14 and 351,334.76 is: 484,847.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,728.04 : 885,595.14 = 351,334.76 : x
  2. Step 2: Convert to fraction form
    641,728.04/885,595.14 = 351,334.76/x
  3. Step 3: Cross multiply
    641,728.04x = 885,595.14 × 351,334.76
  4. Step 4: Simplify right side
    641,728.04x = 311,140,351,541.09
  5. Step 5: Solve for x
    x = 311,140,351,541.09/641,728.04
  6. Step 6: Final answer
    x = 484,847.68

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Double scale
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Similar ratio
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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.