Home / 487,985.82-673,340.10-306,569.34

Finding the Fourth Proportional to 487,985.82, 673,340.10 and 306,569.34

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Solution

The fourth proportional to 487,985.82, 673,340.10 and 306,569.34 is: 423,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,985.82 : 673,340.10 = 306,569.34 : x
  2. Step 2: Convert to fraction form
    487,985.82/673,340.10 = 306,569.34/x
  3. Step 3: Cross multiply
    487,985.82x = 673,340.10 × 306,569.34
  4. Step 4: Simplify right side
    487,985.82x = 206,425,430,052.53
  5. Step 5: Solve for x
    x = 206,425,430,052.53/487,985.82
  6. Step 6: Final answer
    x = 423,015.22

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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.