Home / 639,001.05-881,821.38-352,521.13

Finding the Fourth Proportional to 639,001.05, 881,821.38 and 352,521.13

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Solution

The fourth proportional to 639,001.05, 881,821.38 and 352,521.13 is: 486,479.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,001.05 : 881,821.38 = 352,521.13 : x
  2. Step 2: Convert to fraction form
    639,001.05/881,821.38 = 352,521.13/x
  3. Step 3: Cross multiply
    639,001.05x = 881,821.38 × 352,521.13
  4. Step 4: Simplify right side
    639,001.05x = 310,860,669,335.76
  5. Step 5: Solve for x
    x = 310,860,669,335.76/639,001.05
  6. Step 6: Final answer
    x = 486,479.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.