Home / 639,221.56-958,583.13-239,644.51

Finding the Fourth Proportional to 639,221.56, 958,583.13 and 239,644.51

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Solution

The fourth proportional to 639,221.56, 958,583.13 and 239,644.51 is: 359,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,221.56 : 958,583.13 = 239,644.51 : x
  2. Step 2: Convert to fraction form
    639,221.56/958,583.13 = 239,644.51/x
  3. Step 3: Cross multiply
    639,221.56x = 958,583.13 × 239,644.51
  4. Step 4: Simplify right side
    639,221.56x = 229,719,184,483.12
  5. Step 5: Solve for x
    x = 229,719,184,483.12/639,221.56
  6. Step 6: Final answer
    x = 359,373.34

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Double scale
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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.