Home / 743,238,222.80-1,025,417,699.57-421,331,655.38

Finding the Fourth Proportional to 743,238,222.80, 1,025,417,699.57 and 421,331,655.38

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Solution

The fourth proportional to 743,238,222.80, 1,025,417,699.57 and 421,331,655.38 is: 581,295,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,238,222.80 : 1,025,417,699.57 = 421,331,655.38 : x
  2. Step 2: Convert to fraction form
    743,238,222.80/1,025,417,699.57 = 421,331,655.38/x
  3. Step 3: Cross multiply
    743,238,222.80x = 1,025,417,699.57 × 421,331,655.38
  4. Step 4: Simplify right side
    743,238,222.80x = 432,040,936,811,705,856
  5. Step 5: Solve for x
    x = 432,040,936,811,705,856/743,238,222.80
  6. Step 6: Final answer
    x = 581,295,368.78

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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.