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Finding the Fourth Proportional to 325,083.30, 487,624.95 and 320,417.70

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Solution

The fourth proportional to 325,083.30, 487,624.95 and 320,417.70 is: 480,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,083.30 : 487,624.95 = 320,417.70 : x
  2. Step 2: Convert to fraction form
    325,083.30/487,624.95 = 320,417.70/x
  3. Step 3: Cross multiply
    325,083.30x = 487,624.95 × 320,417.70
  4. Step 4: Simplify right side
    325,083.30x = 156,243,664,941.62
  5. Step 5: Solve for x
    x = 156,243,664,941.62/325,083.30
  6. Step 6: Final answer
    x = 480,626.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.