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Finding the Fourth Proportional to 661,349.44, 912,664.38 and 374,888.80

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Solution

The fourth proportional to 661,349.44, 912,664.38 and 374,888.80 is: 517,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,349.44 : 912,664.38 = 374,888.80 : x
  2. Step 2: Convert to fraction form
    661,349.44/912,664.38 = 374,888.80/x
  3. Step 3: Cross multiply
    661,349.44x = 912,664.38 × 374,888.80
  4. Step 4: Simplify right side
    661,349.44x = 342,147,654,220.94
  5. Step 5: Solve for x
    x = 342,147,654,220.94/661,349.44
  6. Step 6: Final answer
    x = 517,347.76

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1.5x scale

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.