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Finding the Fourth Proportional to 486,026.60, 729,039.90 and 308,004.80

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Solution

The fourth proportional to 486,026.60, 729,039.90 and 308,004.80 is: 462,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,026.60 : 729,039.90 = 308,004.80 : x
  2. Step 2: Convert to fraction form
    486,026.60/729,039.90 = 308,004.80/x
  3. Step 3: Cross multiply
    486,026.60x = 729,039.90 × 308,004.80
  4. Step 4: Simplify right side
    486,026.60x = 224,547,788,591.52
  5. Step 5: Solve for x
    x = 224,547,788,591.52/486,026.60
  6. Step 6: Final answer
    x = 462,007.20

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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.