Home / 555,153.21-766,111.77-313,436.25

Finding the Fourth Proportional to 555,153.21, 766,111.77 and 313,436.25

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Solution

The fourth proportional to 555,153.21, 766,111.77 and 313,436.25 is: 432,542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,153.21 : 766,111.77 = 313,436.25 : x
  2. Step 2: Convert to fraction form
    555,153.21/766,111.77 = 313,436.25/x
  3. Step 3: Cross multiply
    555,153.21x = 766,111.77 × 313,436.25
  4. Step 4: Simplify right side
    555,153.21x = 240,127,200,269.66
  5. Step 5: Solve for x
    x = 240,127,200,269.66/555,153.21
  6. Step 6: Final answer
    x = 432,542.22

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Double scale
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Similar ratio
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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.