Home / 639,191,039.70-881,832,659.49-371,221,255.83

Finding the Fourth Proportional to 639,191,039.70, 881,832,659.49 and 371,221,255.83

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Solution

The fourth proportional to 639,191,039.70, 881,832,659.49 and 371,221,255.83 is: 512,139,574.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,191,039.70 : 881,832,659.49 = 371,221,255.83 : x
  2. Step 2: Convert to fraction form
    639,191,039.70/881,832,659.49 = 371,221,255.83/x
  3. Step 3: Cross multiply
    639,191,039.70x = 881,832,659.49 × 371,221,255.83
  4. Step 4: Simplify right side
    639,191,039.70x = 327,355,027,287,786,560
  5. Step 5: Solve for x
    x = 327,355,027,287,786,560/639,191,039.70
  6. Step 6: Final answer
    x = 512,139,574.80

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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.