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Finding the Fourth Proportional to 484,812.20, 728,384.70 and 433,490.60

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Solution

The fourth proportional to 484,812.20, 728,384.70 and 433,490.60 is: 651,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,812.20 : 728,384.70 = 433,490.60 : x
  2. Step 2: Convert to fraction form
    484,812.20/728,384.70 = 433,490.60/x
  3. Step 3: Cross multiply
    484,812.20x = 728,384.70 × 433,490.60
  4. Step 4: Simplify right side
    484,812.20x = 315,747,920,633.82
  5. Step 5: Solve for x
    x = 315,747,920,633.82/484,812.20
  6. Step 6: Final answer
    x = 651,278.83

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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.