Home / 905,512.06-1,248,865.09-561,108.77

Finding the Fourth Proportional to 905,512.06, 1,248,865.09 and 561,108.77

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Solution

The fourth proportional to 905,512.06, 1,248,865.09 and 561,108.77 is: 773,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,512.06 : 1,248,865.09 = 561,108.77 : x
  2. Step 2: Convert to fraction form
    905,512.06/1,248,865.09 = 561,108.77/x
  3. Step 3: Cross multiply
    905,512.06x = 1,248,865.09 × 561,108.77
  4. Step 4: Simplify right side
    905,512.06x = 700,749,151,581.99
  5. Step 5: Solve for x
    x = 700,749,151,581.99/905,512.06
  6. Step 6: Final answer
    x = 773,870.59

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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.