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Finding the Fourth Proportional to 478,934.24, 718,681.44 and 265,881.56

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Solution

The fourth proportional to 478,934.24, 718,681.44 and 265,881.56 is: 398,977.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,934.24 : 718,681.44 = 265,881.56 : x
  2. Step 2: Convert to fraction form
    478,934.24/718,681.44 = 265,881.56/x
  3. Step 3: Cross multiply
    478,934.24x = 718,681.44 × 265,881.56
  4. Step 4: Simplify right side
    478,934.24x = 191,084,142,410.25
  5. Step 5: Solve for x
    x = 191,084,142,410.25/478,934.24
  6. Step 6: Final answer
    x = 398,977.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.