Home / 640,413,825.92-883,771,835.28-347,058,393.92

Finding the Fourth Proportional to 640,413,825.92, 883,771,835.28 and 347,058,393.92

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Solution

The fourth proportional to 640,413,825.92, 883,771,835.28 and 347,058,393.92 is: 478,940,993.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,413,825.92 : 883,771,835.28 = 347,058,393.92 : x
  2. Step 2: Convert to fraction form
    640,413,825.92/883,771,835.28 = 347,058,393.92/x
  3. Step 3: Cross multiply
    640,413,825.92x = 883,771,835.28 × 347,058,393.92
  4. Step 4: Simplify right side
    640,413,825.92x = 306,720,433,744,007,616
  5. Step 5: Solve for x
    x = 306,720,433,744,007,616/640,413,825.92
  6. Step 6: Final answer
    x = 478,940,993.04

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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.