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Finding the Fourth Proportional to 661,348.44, 912,663 and 374,887.80

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Solution

The fourth proportional to 661,348.44, 912,663 and 374,887.80 is: 517,346.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,348.44 : 912,663 = 374,887.80 : x
  2. Step 2: Convert to fraction form
    661,348.44/912,663 = 374,887.80/x
  3. Step 3: Cross multiply
    661,348.44x = 912,663 × 374,887.80
  4. Step 4: Simplify right side
    661,348.44x = 342,146,224,211.40
  5. Step 5: Solve for x
    x = 342,146,224,211.40/661,348.44
  6. Step 6: Final answer
    x = 517,346.38

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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.