Home / 421,578,003.72-581,838,743.70-242,927,133.96

Finding the Fourth Proportional to 421,578,003.72, 581,838,743.70 and 242,927,133.96

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Solution

The fourth proportional to 421,578,003.72, 581,838,743.70 and 242,927,133.96 is: 335,274,651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,578,003.72 : 581,838,743.70 = 242,927,133.96 : x
  2. Step 2: Convert to fraction form
    421,578,003.72/581,838,743.70 = 242,927,133.96/x
  3. Step 3: Cross multiply
    421,578,003.72x = 581,838,743.70 × 242,927,133.96
  4. Step 4: Simplify right side
    421,578,003.72x = 141,344,418,433,928,016
  5. Step 5: Solve for x
    x = 141,344,418,433,928,016/421,578,003.72
  6. Step 6: Final answer
    x = 335,274,651.87

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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.