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Finding the Fourth Proportional to 478,744.52, 718,324.62 and 256,869.32

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Solution

The fourth proportional to 478,744.52, 718,324.62 and 256,869.32 is: 385,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,744.52 : 718,324.62 = 256,869.32 : x
  2. Step 2: Convert to fraction form
    478,744.52/718,324.62 = 256,869.32/x
  3. Step 3: Cross multiply
    478,744.52x = 718,324.62 × 256,869.32
  4. Step 4: Simplify right side
    478,744.52x = 184,515,556,678.66
  5. Step 5: Solve for x
    x = 184,515,556,678.66/478,744.52
  6. Step 6: Final answer
    x = 385,415.50

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1.5x scale

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.