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Finding the Fourth Proportional to 551,641.40, 826,714.68 and 285,588.80

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Solution

The fourth proportional to 551,641.40, 826,714.68 and 285,588.80 is: 427,996.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,641.40 : 826,714.68 = 285,588.80 : x
  2. Step 2: Convert to fraction form
    551,641.40/826,714.68 = 285,588.80/x
  3. Step 3: Cross multiply
    551,641.40x = 826,714.68 × 285,588.80
  4. Step 4: Simplify right side
    551,641.40x = 236,100,453,403.58
  5. Step 5: Solve for x
    x = 236,100,453,403.58/551,641.40
  6. Step 6: Final answer
    x = 427,996.26

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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.