Home / 689,113.50-950,976.66-387,307.50

Finding the Fourth Proportional to 689,113.50, 950,976.66 and 387,307.50

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Solution

The fourth proportional to 689,113.50, 950,976.66 and 387,307.50 is: 534,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,113.50 : 950,976.66 = 387,307.50 : x
  2. Step 2: Convert to fraction form
    689,113.50/950,976.66 = 387,307.50/x
  3. Step 3: Cross multiply
    689,113.50x = 950,976.66 × 387,307.50
  4. Step 4: Simplify right side
    689,113.50x = 368,320,392,742.95
  5. Step 5: Solve for x
    x = 368,320,392,742.95/689,113.50
  6. Step 6: Final answer
    x = 534,484.37

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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.