Home / 678,391.20-1,017,586.80-601,408.80

Finding the Fourth Proportional to 678,391.20, 1,017,586.80 and 601,408.80

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Solution

The fourth proportional to 678,391.20, 1,017,586.80 and 601,408.80 is: 902,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,391.20 : 1,017,586.80 = 601,408.80 : x
  2. Step 2: Convert to fraction form
    678,391.20/1,017,586.80 = 601,408.80/x
  3. Step 3: Cross multiply
    678,391.20x = 1,017,586.80 × 601,408.80
  4. Step 4: Simplify right side
    678,391.20x = 611,985,656,283.84
  5. Step 5: Solve for x
    x = 611,985,656,283.84/678,391.20
  6. Step 6: Final answer
    x = 902,113.20

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.