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Finding the Fourth Proportional to 665,791.67, 918,848.48 and 407,667.35

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Solution

The fourth proportional to 665,791.67, 918,848.48 and 407,667.35 is: 562,615.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,791.67 : 918,848.48 = 407,667.35 : x
  2. Step 2: Convert to fraction form
    665,791.67/918,848.48 = 407,667.35/x
  3. Step 3: Cross multiply
    665,791.67x = 918,848.48 × 407,667.35
  4. Step 4: Simplify right side
    665,791.67x = 374,584,518,260.55
  5. Step 5: Solve for x
    x = 374,584,518,260.55/665,791.67
  6. Step 6: Final answer
    x = 562,615.21

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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.