Home / 987,280.82-1,478,260.12-644,876.34

Finding the Fourth Proportional to 987,280.82, 1,478,260.12 and 644,876.34

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Solution

The fourth proportional to 987,280.82, 1,478,260.12 and 644,876.34 is: 965,576.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,280.82 : 1,478,260.12 = 644,876.34 : x
  2. Step 2: Convert to fraction form
    987,280.82/1,478,260.12 = 644,876.34/x
  3. Step 3: Cross multiply
    987,280.82x = 1,478,260.12 × 644,876.34
  4. Step 4: Simplify right side
    987,280.82x = 953,294,974,752.85
  5. Step 5: Solve for x
    x = 953,294,974,752.85/987,280.82
  6. Step 6: Final answer
    x = 965,576.32

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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.