Home / 487,003.95-671,630.29-305,732.73

Finding the Fourth Proportional to 487,003.95, 671,630.29 and 305,732.73

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Solution

The fourth proportional to 487,003.95, 671,630.29 and 305,732.73 is: 421,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,003.95 : 671,630.29 = 305,732.73 : x
  2. Step 2: Convert to fraction form
    487,003.95/671,630.29 = 305,732.73/x
  3. Step 3: Cross multiply
    487,003.95x = 671,630.29 × 305,732.73
  4. Step 4: Simplify right side
    487,003.95x = 205,339,362,112.39
  5. Step 5: Solve for x
    x = 205,339,362,112.39/487,003.95
  6. Step 6: Final answer
    x = 421,637.98

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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.