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Finding the Fourth Proportional to 639,547.94, 882,553.03 and 353,061.88

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Solution

The fourth proportional to 639,547.94, 882,553.03 and 353,061.88 is: 487,212.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,547.94 : 882,553.03 = 353,061.88 : x
  2. Step 2: Convert to fraction form
    639,547.94/882,553.03 = 353,061.88/x
  3. Step 3: Cross multiply
    639,547.94x = 882,553.03 × 353,061.88
  4. Step 4: Simplify right side
    639,547.94x = 311,595,828,882.46
  5. Step 5: Solve for x
    x = 311,595,828,882.46/639,547.94
  6. Step 6: Final answer
    x = 487,212.62

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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.