Home / 769,492.80-1,154,239.20-320,064.30

Finding the Fourth Proportional to 769,492.80, 1,154,239.20 and 320,064.30

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Solution

The fourth proportional to 769,492.80, 1,154,239.20 and 320,064.30 is: 480,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,492.80 : 1,154,239.20 = 320,064.30 : x
  2. Step 2: Convert to fraction form
    769,492.80/1,154,239.20 = 320,064.30/x
  3. Step 3: Cross multiply
    769,492.80x = 1,154,239.20 × 320,064.30
  4. Step 4: Simplify right side
    769,492.80x = 369,430,761,580.56
  5. Step 5: Solve for x
    x = 369,430,761,580.56/769,492.80
  6. Step 6: Final answer
    x = 480,096.45

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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.