Home / 640,403.15-883,840.83-619,373.12

Finding the Fourth Proportional to 640,403.15, 883,840.83 and 619,373.12

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Solution

The fourth proportional to 640,403.15, 883,840.83 and 619,373.12 is: 854,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,403.15 : 883,840.83 = 619,373.12 : x
  2. Step 2: Convert to fraction form
    640,403.15/883,840.83 = 619,373.12/x
  3. Step 3: Cross multiply
    640,403.15x = 883,840.83 × 619,373.12
  4. Step 4: Simplify right side
    640,403.15x = 547,427,252,460.49
  5. Step 5: Solve for x
    x = 547,427,252,460.49/640,403.15
  6. Step 6: Final answer
    x = 854,816.61

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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.