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Finding the Fourth Proportional to 520,097.90, 729,120.10 and 520,097.90

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Solution

The fourth proportional to 520,097.90, 729,120.10 and 520,097.90 is: 729,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,097.90 : 729,120.10 = 520,097.90 : x
  2. Step 2: Convert to fraction form
    520,097.90/729,120.10 = 520,097.90/x
  3. Step 3: Cross multiply
    520,097.90x = 729,120.10 × 520,097.90
  4. Step 4: Simplify right side
    520,097.90x = 379,213,832,857.79
  5. Step 5: Solve for x
    x = 379,213,832,857.79/520,097.90
  6. Step 6: Final answer
    x = 729,120.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.