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Finding the Fourth Proportional to 453,282.40, 679,923.60 and 311,564.80

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Solution

The fourth proportional to 453,282.40, 679,923.60 and 311,564.80 is: 467,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,282.40 : 679,923.60 = 311,564.80 : x
  2. Step 2: Convert to fraction form
    453,282.40/679,923.60 = 311,564.80/x
  3. Step 3: Cross multiply
    453,282.40x = 679,923.60 × 311,564.80
  4. Step 4: Simplify right side
    453,282.40x = 211,840,260,449.28
  5. Step 5: Solve for x
    x = 211,840,260,449.28/453,282.40
  6. Step 6: Final answer
    x = 467,347.20

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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.