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Finding the Fourth Proportional to 554,579.42, 765,327.02 and 312,861.25

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Solution

The fourth proportional to 554,579.42, 765,327.02 and 312,861.25 is: 431,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,579.42 : 765,327.02 = 312,861.25 : x
  2. Step 2: Convert to fraction form
    554,579.42/765,327.02 = 312,861.25/x
  3. Step 3: Cross multiply
    554,579.42x = 765,327.02 × 312,861.25
  4. Step 4: Simplify right side
    554,579.42x = 239,441,164,658.35
  5. Step 5: Solve for x
    x = 239,441,164,658.35/554,579.42
  6. Step 6: Final answer
    x = 431,752.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.