Home / 891,623.36-1,230,440.10-509,658.34

Finding the Fourth Proportional to 891,623.36, 1,230,440.10 and 509,658.34

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Solution

The fourth proportional to 891,623.36, 1,230,440.10 and 509,658.34 is: 703,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,623.36 : 1,230,440.10 = 509,658.34 : x
  2. Step 2: Convert to fraction form
    891,623.36/1,230,440.10 = 509,658.34/x
  3. Step 3: Cross multiply
    891,623.36x = 1,230,440.10 × 509,658.34
  4. Step 4: Simplify right side
    891,623.36x = 627,104,058,835.43
  5. Step 5: Solve for x
    x = 627,104,058,835.43/891,623.36
  6. Step 6: Final answer
    x = 703,328.43

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Double scale
Find fourth proportional to 891,624.36, 1,230,441.48 and 509,659.34
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.