Home / 521,927.86-720,261.80-304,265.76

Finding the Fourth Proportional to 521,927.86, 720,261.80 and 304,265.76

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Solution

The fourth proportional to 521,927.86, 720,261.80 and 304,265.76 is: 419,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,927.86 : 720,261.80 = 304,265.76 : x
  2. Step 2: Convert to fraction form
    521,927.86/720,261.80 = 304,265.76/x
  3. Step 3: Cross multiply
    521,927.86x = 720,261.80 × 304,265.76
  4. Step 4: Simplify right side
    521,927.86x = 219,151,003,975.97
  5. Step 5: Solve for x
    x = 219,151,003,975.97/521,927.86
  6. Step 6: Final answer
    x = 419,887.54

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1.5x scale

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.