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Finding the Fourth Proportional to 524,956,503.40, 787,340,276.70 and 330,519,956.20

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Solution

The fourth proportional to 524,956,503.40, 787,340,276.70 and 330,519,956.20 is: 495,720,449.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,956,503.40 : 787,340,276.70 = 330,519,956.20 : x
  2. Step 2: Convert to fraction form
    524,956,503.40/787,340,276.70 = 330,519,956.20/x
  3. Step 3: Cross multiply
    524,956,503.40x = 787,340,276.70 × 330,519,956.20
  4. Step 4: Simplify right side
    524,956,503.40x = 260,231,673,769,379,872
  5. Step 5: Solve for x
    x = 260,231,673,769,379,872/524,956,503.40
  6. Step 6: Final answer
    x = 495,720,449.38

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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.