Home / 658,548.83-987,720.28-209,210.85

Finding the Fourth Proportional to 658,548.83, 987,720.28 and 209,210.85

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Solution

The fourth proportional to 658,548.83, 987,720.28 and 209,210.85 is: 313,783.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,548.83 : 987,720.28 = 209,210.85 : x
  2. Step 2: Convert to fraction form
    658,548.83/987,720.28 = 209,210.85/x
  3. Step 3: Cross multiply
    658,548.83x = 987,720.28 × 209,210.85
  4. Step 4: Simplify right side
    658,548.83x = 206,641,798,818.01
  5. Step 5: Solve for x
    x = 206,641,798,818.01/658,548.83
  6. Step 6: Final answer
    x = 313,783.56

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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.