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Finding the Fourth Proportional to 510,755.40, 766,133.10 and 405,001.80

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Solution

The fourth proportional to 510,755.40, 766,133.10 and 405,001.80 is: 607,502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,755.40 : 766,133.10 = 405,001.80 : x
  2. Step 2: Convert to fraction form
    510,755.40/766,133.10 = 405,001.80/x
  3. Step 3: Cross multiply
    510,755.40x = 766,133.10 × 405,001.80
  4. Step 4: Simplify right side
    510,755.40x = 310,285,284,539.58
  5. Step 5: Solve for x
    x = 310,285,284,539.58/510,755.40
  6. Step 6: Final answer
    x = 607,502.70

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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.