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Finding the Fourth Proportional to 324,085.60, 486,128.40 and 304,386.40

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Solution

The fourth proportional to 324,085.60, 486,128.40 and 304,386.40 is: 456,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,085.60 : 486,128.40 = 304,386.40 : x
  2. Step 2: Convert to fraction form
    324,085.60/486,128.40 = 304,386.40/x
  3. Step 3: Cross multiply
    324,085.60x = 486,128.40 × 304,386.40
  4. Step 4: Simplify right side
    324,085.60x = 147,970,873,613.76
  5. Step 5: Solve for x
    x = 147,970,873,613.76/324,085.60
  6. Step 6: Final answer
    x = 456,579.60

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.