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Finding the Fourth Proportional to 661,051.42, 912,260.79 and 359,245.66

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Solution

The fourth proportional to 661,051.42, 912,260.79 and 359,245.66 is: 495,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,051.42 : 912,260.79 = 359,245.66 : x
  2. Step 2: Convert to fraction form
    661,051.42/912,260.79 = 359,245.66/x
  3. Step 3: Cross multiply
    661,051.42x = 912,260.79 × 359,245.66
  4. Step 4: Simplify right side
    661,051.42x = 327,725,729,595.67
  5. Step 5: Solve for x
    x = 327,725,729,595.67/661,051.42
  6. Step 6: Final answer
    x = 495,764.35

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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.