Home / 689,725,693.66-953,066,516.37-491,142,425.88

Finding the Fourth Proportional to 689,725,693.66, 953,066,516.37 and 491,142,425.88

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Solution

The fourth proportional to 689,725,693.66, 953,066,516.37 and 491,142,425.88 is: 678,663,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,725,693.66 : 953,066,516.37 = 491,142,425.88 : x
  2. Step 2: Convert to fraction form
    689,725,693.66/953,066,516.37 = 491,142,425.88/x
  3. Step 3: Cross multiply
    689,725,693.66x = 953,066,516.37 × 491,142,425.88
  4. Step 4: Simplify right side
    689,725,693.66x = 468,091,400,874,962,560
  5. Step 5: Solve for x
    x = 468,091,400,874,962,560/689,725,693.66
  6. Step 6: Final answer
    x = 678,663,134.02

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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.