Home / 639,639.05-882,695.93-353,161.17

Finding the Fourth Proportional to 639,639.05, 882,695.93 and 353,161.17

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Solution

The fourth proportional to 639,639.05, 882,695.93 and 353,161.17 is: 487,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,639.05 : 882,695.93 = 353,161.17 : x
  2. Step 2: Convert to fraction form
    639,639.05/882,695.93 = 353,161.17/x
  3. Step 3: Cross multiply
    639,639.05x = 882,695.93 × 353,161.17
  4. Step 4: Simplify right side
    639,639.05x = 311,733,925,627.23
  5. Step 5: Solve for x
    x = 311,733,925,627.23/639,639.05
  6. Step 6: Final answer
    x = 487,359.13

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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.