Home / 639,083,390.40-958,625,085.60-329,146,999.20

Finding the Fourth Proportional to 639,083,390.40, 958,625,085.60 and 329,146,999.20

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Solution

The fourth proportional to 639,083,390.40, 958,625,085.60 and 329,146,999.20 is: 493,720,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,083,390.40 : 958,625,085.60 = 329,146,999.20 : x
  2. Step 2: Convert to fraction form
    639,083,390.40/958,625,085.60 = 329,146,999.20/x
  3. Step 3: Cross multiply
    639,083,390.40x = 958,625,085.60 × 329,146,999.20
  4. Step 4: Simplify right side
    639,083,390.40x = 315,528,570,283,083,136
  5. Step 5: Solve for x
    x = 315,528,570,283,083,136/639,083,390.40
  6. Step 6: Final answer
    x = 493,720,498.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.