Home / 661,189,505.10-991,927,746.72-201,115,716.98

Finding the Fourth Proportional to 661,189,505.10, 991,927,746.72 and 201,115,716.98

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Solution

The fourth proportional to 661,189,505.10, 991,927,746.72 and 201,115,716.98 is: 301,717,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,189,505.10 : 991,927,746.72 = 201,115,716.98 : x
  2. Step 2: Convert to fraction form
    661,189,505.10/991,927,746.72 = 201,115,716.98/x
  3. Step 3: Cross multiply
    661,189,505.10x = 991,927,746.72 × 201,115,716.98
  4. Step 4: Simplify right side
    661,189,505.10x = 199,492,259,973,948,640
  5. Step 5: Solve for x
    x = 199,492,259,973,948,640/661,189,505.10
  6. Step 6: Final answer
    x = 301,717,220.91

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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.