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Finding the Fourth Proportional to 661,663.98, 913,304.43 and 375,374.34

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Solution

The fourth proportional to 661,663.98, 913,304.43 and 375,374.34 is: 518,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,663.98 : 913,304.43 = 375,374.34 : x
  2. Step 2: Convert to fraction form
    661,663.98/913,304.43 = 375,374.34/x
  3. Step 3: Cross multiply
    661,663.98x = 913,304.43 × 375,374.34
  4. Step 4: Simplify right side
    661,663.98x = 342,831,047,630.33
  5. Step 5: Solve for x
    x = 342,831,047,630.33/661,663.98
  6. Step 6: Final answer
    x = 518,134.67

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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.