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Finding the Fourth Proportional to 478,577.79, 717,189.39 and 265,439.52

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Solution

The fourth proportional to 478,577.79, 717,189.39 and 265,439.52 is: 397,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,577.79 : 717,189.39 = 265,439.52 : x
  2. Step 2: Convert to fraction form
    478,577.79/717,189.39 = 265,439.52/x
  3. Step 3: Cross multiply
    478,577.79x = 717,189.39 × 265,439.52
  4. Step 4: Simplify right side
    478,577.79x = 190,370,407,430.69
  5. Step 5: Solve for x
    x = 190,370,407,430.69/478,577.79
  6. Step 6: Final answer
    x = 397,783.62

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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.