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Finding the Fourth Proportional to 674,555.80, 930,889.44 and 368,636.87

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Solution

The fourth proportional to 674,555.80, 930,889.44 and 368,636.87 is: 508,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,555.80 : 930,889.44 = 368,636.87 : x
  2. Step 2: Convert to fraction form
    674,555.80/930,889.44 = 368,636.87/x
  3. Step 3: Cross multiply
    674,555.80x = 930,889.44 × 368,636.87
  4. Step 4: Simplify right side
    674,555.80x = 343,160,170,768.09
  5. Step 5: Solve for x
    x = 343,160,170,768.09/674,555.80
  6. Step 6: Final answer
    x = 508,720.21

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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.