Home / 909,074.91-1,254,531.49-501,191.21

Finding the Fourth Proportional to 909,074.91, 1,254,531.49 and 501,191.21

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Solution

The fourth proportional to 909,074.91, 1,254,531.49 and 501,191.21 is: 691,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,074.91 : 1,254,531.49 = 501,191.21 : x
  2. Step 2: Convert to fraction form
    909,074.91/1,254,531.49 = 501,191.21/x
  3. Step 3: Cross multiply
    909,074.91x = 1,254,531.49 × 501,191.21
  4. Step 4: Simplify right side
    909,074.91x = 628,760,151,066.90
  5. Step 5: Solve for x
    x = 628,760,151,066.90/909,074.91
  6. Step 6: Final answer
    x = 691,648.34

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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.