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Finding the Fourth Proportional to 484,416.08, 668,586.68 and 320,784.16

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Solution

The fourth proportional to 484,416.08, 668,586.68 and 320,784.16 is: 442,743.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,416.08 : 668,586.68 = 320,784.16 : x
  2. Step 2: Convert to fraction form
    484,416.08/668,586.68 = 320,784.16/x
  3. Step 3: Cross multiply
    484,416.08x = 668,586.68 × 320,784.16
  4. Step 4: Simplify right side
    484,416.08x = 214,472,016,530.99
  5. Step 5: Solve for x
    x = 214,472,016,530.99/484,416.08
  6. Step 6: Final answer
    x = 442,743.39

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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.