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Finding the Fourth Proportional to 483,430.40, 724,454.40 and 356,076.80

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Solution

The fourth proportional to 483,430.40, 724,454.40 and 356,076.80 is: 533,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,430.40 : 724,454.40 = 356,076.80 : x
  2. Step 2: Convert to fraction form
    483,430.40/724,454.40 = 356,076.80/x
  3. Step 3: Cross multiply
    483,430.40x = 724,454.40 × 356,076.80
  4. Step 4: Simplify right side
    483,430.40x = 257,961,404,497.92
  5. Step 5: Solve for x
    x = 257,961,404,497.92/483,430.40
  6. Step 6: Final answer
    x = 533,606.09

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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.