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Finding the Fourth Proportional to 631,907.64, 872,189.25 and 360,136.72

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Solution

The fourth proportional to 631,907.64, 872,189.25 and 360,136.72 is: 497,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,907.64 : 872,189.25 = 360,136.72 : x
  2. Step 2: Convert to fraction form
    631,907.64/872,189.25 = 360,136.72/x
  3. Step 3: Cross multiply
    631,907.64x = 872,189.25 × 360,136.72
  4. Step 4: Simplify right side
    631,907.64x = 314,107,375,714.26
  5. Step 5: Solve for x
    x = 314,107,375,714.26/631,907.64
  6. Step 6: Final answer
    x = 497,077.98

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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.