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Finding the Fourth Proportional to 550,645.70, 760,506.77 and 379,090.13

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Solution

The fourth proportional to 550,645.70, 760,506.77 and 379,090.13 is: 523,568.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,645.70 : 760,506.77 = 379,090.13 : x
  2. Step 2: Convert to fraction form
    550,645.70/760,506.77 = 379,090.13/x
  3. Step 3: Cross multiply
    550,645.70x = 760,506.77 × 379,090.13
  4. Step 4: Simplify right side
    550,645.70x = 288,300,607,450.37
  5. Step 5: Solve for x
    x = 288,300,607,450.37/550,645.70
  6. Step 6: Final answer
    x = 523,568.26

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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.