Home / 640,413,709.56-883,771,675.02-347,058,277.56

Finding the Fourth Proportional to 640,413,709.56, 883,771,675.02 and 347,058,277.56

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Solution

The fourth proportional to 640,413,709.56, 883,771,675.02 and 347,058,277.56 is: 478,940,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,413,709.56 : 883,771,675.02 = 347,058,277.56 : x
  2. Step 2: Convert to fraction form
    640,413,709.56/883,771,675.02 = 347,058,277.56/x
  3. Step 3: Cross multiply
    640,413,709.56x = 883,771,675.02 × 347,058,277.56
  4. Step 4: Simplify right side
    640,413,709.56x = 306,720,275,288,757,248
  5. Step 5: Solve for x
    x = 306,720,275,288,757,248/640,413,709.56
  6. Step 6: Final answer
    x = 478,940,832.64

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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.