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Finding the Fourth Proportional to 635,987.40, 877,620.18 and 349,501.32

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Solution

The fourth proportional to 635,987.40, 877,620.18 and 349,501.32 is: 482,288.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,987.40 : 877,620.18 = 349,501.32 : x
  2. Step 2: Convert to fraction form
    635,987.40/877,620.18 = 349,501.32/x
  3. Step 3: Cross multiply
    635,987.40x = 877,620.18 × 349,501.32
  4. Step 4: Simplify right side
    635,987.40x = 306,729,411,368.64
  5. Step 5: Solve for x
    x = 306,729,411,368.64/635,987.40
  6. Step 6: Final answer
    x = 482,288.50

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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.