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Finding the Fourth Proportional to 554,914.80, 832,372.20 and 386,953.20

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Solution

The fourth proportional to 554,914.80, 832,372.20 and 386,953.20 is: 580,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,914.80 : 832,372.20 = 386,953.20 : x
  2. Step 2: Convert to fraction form
    554,914.80/832,372.20 = 386,953.20/x
  3. Step 3: Cross multiply
    554,914.80x = 832,372.20 × 386,953.20
  4. Step 4: Simplify right side
    554,914.80x = 322,089,086,381.04
  5. Step 5: Solve for x
    x = 322,089,086,381.04/554,914.80
  6. Step 6: Final answer
    x = 580,429.80

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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.