Home / 891,119.72-1,230,223.07-688,220.80

Finding the Fourth Proportional to 891,119.72, 1,230,223.07 and 688,220.80

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Solution

The fourth proportional to 891,119.72, 1,230,223.07 and 688,220.80 is: 950,113.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,119.72 : 1,230,223.07 = 688,220.80 : x
  2. Step 2: Convert to fraction form
    891,119.72/1,230,223.07 = 688,220.80/x
  3. Step 3: Cross multiply
    891,119.72x = 1,230,223.07 × 688,220.80
  4. Step 4: Simplify right side
    891,119.72x = 846,665,104,058.85
  5. Step 5: Solve for x
    x = 846,665,104,058.85/891,119.72
  6. Step 6: Final answer
    x = 950,113.75

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Double scale
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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.