Home / 521,973.19-720,310.75-307,127.17

Finding the Fourth Proportional to 521,973.19, 720,310.75 and 307,127.17

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Solution

The fourth proportional to 521,973.19, 720,310.75 and 307,127.17 is: 423,828.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,973.19 : 720,310.75 = 307,127.17 : x
  2. Step 2: Convert to fraction form
    521,973.19/720,310.75 = 307,127.17/x
  3. Step 3: Cross multiply
    521,973.19x = 720,310.75 × 307,127.17
  4. Step 4: Simplify right side
    521,973.19x = 221,226,999,599.48
  5. Step 5: Solve for x
    x = 221,226,999,599.48/521,973.19
  6. Step 6: Final answer
    x = 423,828.28

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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.