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Finding the Fourth Proportional to 453,534.40, 680,301.60 and 311,816.80

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Solution

The fourth proportional to 453,534.40, 680,301.60 and 311,816.80 is: 467,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,534.40 : 680,301.60 = 311,816.80 : x
  2. Step 2: Convert to fraction form
    453,534.40/680,301.60 = 311,816.80/x
  3. Step 3: Cross multiply
    453,534.40x = 680,301.60 × 311,816.80
  4. Step 4: Simplify right side
    453,534.40x = 212,129,467,946.88
  5. Step 5: Solve for x
    x = 212,129,467,946.88/453,534.40
  6. Step 6: Final answer
    x = 467,725.20

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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.