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Finding the Fourth Proportional to 635,978.40, 877,607.76 and 349,492.32

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Solution

The fourth proportional to 635,978.40, 877,607.76 and 349,492.32 is: 482,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,978.40 : 877,607.76 = 349,492.32 : x
  2. Step 2: Convert to fraction form
    635,978.40/877,607.76 = 349,492.32/x
  3. Step 3: Cross multiply
    635,978.40x = 877,607.76 × 349,492.32
  4. Step 4: Simplify right side
    635,978.40x = 306,717,172,092.40
  5. Step 5: Solve for x
    x = 306,717,172,092.40/635,978.40
  6. Step 6: Final answer
    x = 482,276.08

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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.