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Finding the Fourth Proportional to 547,278.40, 820,917.60 and 509,953.60

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Solution

The fourth proportional to 547,278.40, 820,917.60 and 509,953.60 is: 764,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,278.40 : 820,917.60 = 509,953.60 : x
  2. Step 2: Convert to fraction form
    547,278.40/820,917.60 = 509,953.60/x
  3. Step 3: Cross multiply
    547,278.40x = 820,917.60 × 509,953.60
  4. Step 4: Simplify right side
    547,278.40x = 418,629,885,423.36
  5. Step 5: Solve for x
    x = 418,629,885,423.36/547,278.40
  6. Step 6: Final answer
    x = 764,930.40

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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.