Home / 521,897.20-720,205.94-307,051.10

Finding the Fourth Proportional to 521,897.20, 720,205.94 and 307,051.10

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Solution

The fourth proportional to 521,897.20, 720,205.94 and 307,051.10 is: 423,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,897.20 : 720,205.94 = 307,051.10 : x
  2. Step 2: Convert to fraction form
    521,897.20/720,205.94 = 307,051.10/x
  3. Step 3: Cross multiply
    521,897.20x = 720,205.94 × 307,051.10
  4. Step 4: Simplify right side
    521,897.20x = 221,140,026,103.53
  5. Step 5: Solve for x
    x = 221,140,026,103.53/521,897.20
  6. Step 6: Final answer
    x = 423,723.34

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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.