Home / 421,539,963.06-581,786,027.48-242,889,648.73

Finding the Fourth Proportional to 421,539,963.06, 581,786,027.48 and 242,889,648.73

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Solution

The fourth proportional to 421,539,963.06, 581,786,027.48 and 242,889,648.73 is: 335,222,793.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,539,963.06 : 581,786,027.48 = 242,889,648.73 : x
  2. Step 2: Convert to fraction form
    421,539,963.06/581,786,027.48 = 242,889,648.73/x
  3. Step 3: Cross multiply
    421,539,963.06x = 581,786,027.48 × 242,889,648.73
  4. Step 4: Simplify right side
    421,539,963.06x = 141,309,803,850,639,328
  5. Step 5: Solve for x
    x = 141,309,803,850,639,328/421,539,963.06
  6. Step 6: Final answer
    x = 335,222,793.17

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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.