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Finding the Fourth Proportional to 520,043.90, 780,325.05 and 295,576.70

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Solution

The fourth proportional to 520,043.90, 780,325.05 and 295,576.70 is: 443,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,043.90 : 780,325.05 = 295,576.70 : x
  2. Step 2: Convert to fraction form
    520,043.90/780,325.05 = 295,576.70/x
  3. Step 3: Cross multiply
    520,043.90x = 780,325.05 × 295,576.70
  4. Step 4: Simplify right side
    520,043.90x = 230,645,903,206.34
  5. Step 5: Solve for x
    x = 230,645,903,206.34/520,043.90
  6. Step 6: Final answer
    x = 443,512.37

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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.