Home / 521,899.45-720,209.04-307,053.35

Finding the Fourth Proportional to 521,899.45, 720,209.04 and 307,053.35

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Solution

The fourth proportional to 521,899.45, 720,209.04 and 307,053.35 is: 423,726.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,899.45 : 720,209.04 = 307,053.35 : x
  2. Step 2: Convert to fraction form
    521,899.45/720,209.04 = 307,053.35/x
  3. Step 3: Cross multiply
    521,899.45x = 720,209.04 × 307,053.35
  4. Step 4: Simplify right side
    521,899.45x = 221,142,598,432.28
  5. Step 5: Solve for x
    x = 221,142,598,432.28/521,899.45
  6. Step 6: Final answer
    x = 423,726.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.