Home / 393,953,584.16-543,639,057.36-217,732,466.72

Finding the Fourth Proportional to 393,953,584.16, 543,639,057.36 and 217,732,466.72

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Solution

The fourth proportional to 393,953,584.16, 543,639,057.36 and 217,732,466.72 is: 300,461,469.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,953,584.16 : 543,639,057.36 = 217,732,466.72 : x
  2. Step 2: Convert to fraction form
    393,953,584.16/543,639,057.36 = 217,732,466.72/x
  3. Step 3: Cross multiply
    393,953,584.16x = 543,639,057.36 × 217,732,466.72
  4. Step 4: Simplify right side
    393,953,584.16x = 118,367,872,964,328,368
  5. Step 5: Solve for x
    x = 118,367,872,964,328,368/393,953,584.16
  6. Step 6: Final answer
    x = 300,461,469.89

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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.