Home / 851,456.89-1,275,740.09-513,788.04

Finding the Fourth Proportional to 851,456.89, 1,275,740.09 and 513,788.04

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Solution

The fourth proportional to 851,456.89, 1,275,740.09 and 513,788.04 is: 769,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,456.89 : 1,275,740.09 = 513,788.04 : x
  2. Step 2: Convert to fraction form
    851,456.89/1,275,740.09 = 513,788.04/x
  3. Step 3: Cross multiply
    851,456.89x = 1,275,740.09 × 513,788.04
  4. Step 4: Simplify right side
    851,456.89x = 655,459,997,821.58
  5. Step 5: Solve for x
    x = 655,459,997,821.58/851,456.89
  6. Step 6: Final answer
    x = 769,809.97

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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.