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Finding the Fourth Proportional to 631,967.95, 872,053.10 and 360,019.64

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Solution

The fourth proportional to 631,967.95, 872,053.10 and 360,019.64 is: 496,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,967.95 : 872,053.10 = 360,019.64 : x
  2. Step 2: Convert to fraction form
    631,967.95/872,053.10 = 360,019.64/x
  3. Step 3: Cross multiply
    631,967.95x = 872,053.10 × 360,019.64
  4. Step 4: Simplify right side
    631,967.95x = 313,956,236,962.52
  5. Step 5: Solve for x
    x = 313,956,236,962.52/631,967.95
  6. Step 6: Final answer
    x = 496,791.39

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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.