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Finding the Fourth Proportional to 510,644.40, 765,966.60 and 404,890.80

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Solution

The fourth proportional to 510,644.40, 765,966.60 and 404,890.80 is: 607,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,644.40 : 765,966.60 = 404,890.80 : x
  2. Step 2: Convert to fraction form
    510,644.40/765,966.60 = 404,890.80/x
  3. Step 3: Cross multiply
    510,644.40x = 765,966.60 × 404,890.80
  4. Step 4: Simplify right side
    510,644.40x = 310,132,829,447.28
  5. Step 5: Solve for x
    x = 310,132,829,447.28/510,644.40
  6. Step 6: Final answer
    x = 607,336.20

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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.