Home / 639,759,356.55-959,639,034.83-542,904,234.30

Finding the Fourth Proportional to 639,759,356.55, 959,639,034.83 and 542,904,234.30

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Solution

The fourth proportional to 639,759,356.55, 959,639,034.83 and 542,904,234.30 is: 814,356,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,759,356.55 : 959,639,034.83 = 542,904,234.30 : x
  2. Step 2: Convert to fraction form
    639,759,356.55/959,639,034.83 = 542,904,234.30/x
  3. Step 3: Cross multiply
    639,759,356.55x = 959,639,034.83 × 542,904,234.30
  4. Step 4: Simplify right side
    639,759,356.55x = 520,992,095,406,057,664
  5. Step 5: Solve for x
    x = 520,992,095,406,057,664/639,759,356.55
  6. Step 6: Final answer
    x = 814,356,351.45

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Double scale
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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.