Home / 743,238,198.69-1,025,417,666.55-421,331,631.34

Finding the Fourth Proportional to 743,238,198.69, 1,025,417,666.55 and 421,331,631.34

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Solution

The fourth proportional to 743,238,198.69, 1,025,417,666.55 and 421,331,631.34 is: 581,295,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,238,198.69 : 1,025,417,666.55 = 421,331,631.34 : x
  2. Step 2: Convert to fraction form
    743,238,198.69/1,025,417,666.55 = 421,331,631.34/x
  3. Step 3: Cross multiply
    743,238,198.69x = 1,025,417,666.55 × 421,331,631.34
  4. Step 4: Simplify right side
    743,238,198.69x = 432,040,898,252,367,616
  5. Step 5: Solve for x
    x = 432,040,898,252,367,616/743,238,198.69
  6. Step 6: Final answer
    x = 581,295,335.75

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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.