Home / 987,486.20-1,481,277.90-515,094.20

Finding the Fourth Proportional to 987,486.20, 1,481,277.90 and 515,094.20

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Solution

The fourth proportional to 987,486.20, 1,481,277.90 and 515,094.20 is: 772,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,486.20 : 1,481,277.90 = 515,094.20 : x
  2. Step 2: Convert to fraction form
    987,486.20/1,481,277.90 = 515,094.20/x
  3. Step 3: Cross multiply
    987,486.20x = 1,481,277.90 × 515,094.20
  4. Step 4: Simplify right side
    987,486.20x = 762,997,654,878.18
  5. Step 5: Solve for x
    x = 762,997,654,878.18/987,486.20
  6. Step 6: Final answer
    x = 772,666.65

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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.