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Finding the Fourth Proportional to 520,546.80, 782,569.80 and 443,564.40

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Solution

The fourth proportional to 520,546.80, 782,569.80 and 443,564.40 is: 666,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,546.80 : 782,569.80 = 443,564.40 : x
  2. Step 2: Convert to fraction form
    520,546.80/782,569.80 = 443,564.40/x
  3. Step 3: Cross multiply
    520,546.80x = 782,569.80 × 443,564.40
  4. Step 4: Simplify right side
    520,546.80x = 347,120,103,795.12
  5. Step 5: Solve for x
    x = 347,120,103,795.12/520,546.80
  6. Step 6: Final answer
    x = 666,837.46

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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.