Home / 639,895,989.10-959,843,983.65-446,026,312.30

Finding the Fourth Proportional to 639,895,989.10, 959,843,983.65 and 446,026,312.30

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Solution

The fourth proportional to 639,895,989.10, 959,843,983.65 and 446,026,312.30 is: 669,039,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,895,989.10 : 959,843,983.65 = 446,026,312.30 : x
  2. Step 2: Convert to fraction form
    639,895,989.10/959,843,983.65 = 446,026,312.30/x
  3. Step 3: Cross multiply
    639,895,989.10x = 959,843,983.65 × 446,026,312.30
  4. Step 4: Simplify right side
    639,895,989.10x = 428,115,672,410,750,976
  5. Step 5: Solve for x
    x = 428,115,672,410,750,976/639,895,989.10
  6. Step 6: Final answer
    x = 669,039,468.45

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Double scale
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Similar ratio
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1.5x scale

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.