Home / 485,820,516.25-669,735,008.69-346,349,140.21

Finding the Fourth Proportional to 485,820,516.25, 669,735,008.69 and 346,349,140.21

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Solution

The fourth proportional to 485,820,516.25, 669,735,008.69 and 346,349,140.21 is: 477,464,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,820,516.25 : 669,735,008.69 = 346,349,140.21 : x
  2. Step 2: Convert to fraction form
    485,820,516.25/669,735,008.69 = 346,349,140.21/x
  3. Step 3: Cross multiply
    485,820,516.25x = 669,735,008.69 × 346,349,140.21
  4. Step 4: Simplify right side
    485,820,516.25x = 231,962,144,429,383,904
  5. Step 5: Solve for x
    x = 231,962,144,429,383,904/485,820,516.25
  6. Step 6: Final answer
    x = 477,464,694.61

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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.