Home / 639,397,145.80-959,095,718.70-394,030,836.10

Finding the Fourth Proportional to 639,397,145.80, 959,095,718.70 and 394,030,836.10

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Solution

The fourth proportional to 639,397,145.80, 959,095,718.70 and 394,030,836.10 is: 591,046,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,145.80 : 959,095,718.70 = 394,030,836.10 : x
  2. Step 2: Convert to fraction form
    639,397,145.80/959,095,718.70 = 394,030,836.10/x
  3. Step 3: Cross multiply
    639,397,145.80x = 959,095,718.70 × 394,030,836.10
  4. Step 4: Simplify right side
    639,397,145.80x = 377,913,287,939,291,456
  5. Step 5: Solve for x
    x = 377,913,287,939,291,456/639,397,145.80
  6. Step 6: Final answer
    x = 591,046,254.15

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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.