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Finding the Fourth Proportional to 639,482.88, 882,486.54 and 353,003.16

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Solution

The fourth proportional to 639,482.88, 882,486.54 and 353,003.16 is: 487,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,482.88 : 882,486.54 = 353,003.16 : x
  2. Step 2: Convert to fraction form
    639,482.88/882,486.54 = 353,003.16/x
  3. Step 3: Cross multiply
    639,482.88x = 882,486.54 × 353,003.16
  4. Step 4: Simplify right side
    639,482.88x = 311,520,537,277.47
  5. Step 5: Solve for x
    x = 311,520,537,277.47/639,482.88
  6. Step 6: Final answer
    x = 487,144.45

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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.