Home / 987,547.70-1,481,321.55-828,115.40

Finding the Fourth Proportional to 987,547.70, 1,481,321.55 and 828,115.40

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Solution

The fourth proportional to 987,547.70, 1,481,321.55 and 828,115.40 is: 1,242,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,547.70 : 1,481,321.55 = 828,115.40 : x
  2. Step 2: Convert to fraction form
    987,547.70/1,481,321.55 = 828,115.40/x
  3. Step 3: Cross multiply
    987,547.70x = 1,481,321.55 × 828,115.40
  4. Step 4: Simplify right side
    987,547.70x = 1,226,705,187,906.87
  5. Step 5: Solve for x
    x = 1,226,705,187,906.87/987,547.70
  6. Step 6: Final answer
    x = 1,242,173.10

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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.