Home / 547,141,244.88-820,762,320-178,678,128.12

Finding the Fourth Proportional to 547,141,244.88, 820,762,320 and 178,678,128.12

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Solution

The fourth proportional to 547,141,244.88, 820,762,320 and 178,678,128.12 is: 268,033,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,141,244.88 : 820,762,320 = 178,678,128.12 : x
  2. Step 2: Convert to fraction form
    547,141,244.88/820,762,320 = 178,678,128.12/x
  3. Step 3: Cross multiply
    547,141,244.88x = 820,762,320 × 178,678,128.12
  4. Step 4: Simplify right side
    547,141,244.88x = 146,652,274,969,028,448
  5. Step 5: Solve for x
    x = 146,652,274,969,028,448/547,141,244.88
  6. Step 6: Final answer
    x = 268,033,668.35

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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.