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Finding the Fourth Proportional to 489,009.60, 733,514.40 and 426,801.60

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Solution

The fourth proportional to 489,009.60, 733,514.40 and 426,801.60 is: 640,202.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,009.60 : 733,514.40 = 426,801.60 : x
  2. Step 2: Convert to fraction form
    489,009.60/733,514.40 = 426,801.60/x
  3. Step 3: Cross multiply
    489,009.60x = 733,514.40 × 426,801.60
  4. Step 4: Simplify right side
    489,009.60x = 313,065,119,543.04
  5. Step 5: Solve for x
    x = 313,065,119,543.04/489,009.60
  6. Step 6: Final answer
    x = 640,202.40

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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.