Home / 641,724.08-885,586.22-355,248.94

Finding the Fourth Proportional to 641,724.08, 885,586.22 and 355,248.94

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Solution

The fourth proportional to 641,724.08, 885,586.22 and 355,248.94 is: 490,247.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,724.08 : 885,586.22 = 355,248.94 : x
  2. Step 2: Convert to fraction form
    641,724.08/885,586.22 = 355,248.94/x
  3. Step 3: Cross multiply
    641,724.08x = 885,586.22 × 355,248.94
  4. Step 4: Simplify right side
    641,724.08x = 314,603,565,933.61
  5. Step 5: Solve for x
    x = 314,603,565,933.61/641,724.08
  6. Step 6: Final answer
    x = 490,247.41

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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.