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Finding the Fourth Proportional to 639,534.49, 882,560.42 and 353,056.93

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Solution

The fourth proportional to 639,534.49, 882,560.42 and 353,056.93 is: 487,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,534.49 : 882,560.42 = 353,056.93 : x
  2. Step 2: Convert to fraction form
    639,534.49/882,560.42 = 353,056.93/x
  3. Step 3: Cross multiply
    639,534.49x = 882,560.42 × 353,056.93
  4. Step 4: Simplify right side
    639,534.49x = 311,594,072,424.71
  5. Step 5: Solve for x
    x = 311,594,072,424.71/639,534.49
  6. Step 6: Final answer
    x = 487,220.12

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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.