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Finding the Fourth Proportional to 639,547.69, 882,552.68 and 353,061.63

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Solution

The fourth proportional to 639,547.69, 882,552.68 and 353,061.63 is: 487,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,547.69 : 882,552.68 = 353,061.63 : x
  2. Step 2: Convert to fraction form
    639,547.69/882,552.68 = 353,061.63/x
  3. Step 3: Cross multiply
    639,547.69x = 882,552.68 × 353,061.63
  4. Step 4: Simplify right side
    639,547.69x = 311,595,487,761.67
  5. Step 5: Solve for x
    x = 311,595,487,761.67/639,547.69
  6. Step 6: Final answer
    x = 487,212.28

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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.