Home / 743,238,197.69-1,025,417,665.17-421,331,630.34

Finding the Fourth Proportional to 743,238,197.69, 1,025,417,665.17 and 421,331,630.34

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Solution

The fourth proportional to 743,238,197.69, 1,025,417,665.17 and 421,331,630.34 is: 581,295,334.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,238,197.69 : 1,025,417,665.17 = 421,331,630.34 : x
  2. Step 2: Convert to fraction form
    743,238,197.69/1,025,417,665.17 = 421,331,630.34/x
  3. Step 3: Cross multiply
    743,238,197.69x = 1,025,417,665.17 × 421,331,630.34
  4. Step 4: Simplify right side
    743,238,197.69x = 432,040,896,645,512,320
  5. Step 5: Solve for x
    x = 432,040,896,645,512,320/743,238,197.69
  6. Step 6: Final answer
    x = 581,295,334.37

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Half scale
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Double scale
Find fourth proportional to 743,238,198.69, 1,025,417,666.55 and 421,331,631.34
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1.5x scale

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.