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Finding the Fourth Proportional to 557,054.16, 768,653.64 and 318,544.08

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Solution

The fourth proportional to 557,054.16, 768,653.64 and 318,544.08 is: 439,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,054.16 : 768,653.64 = 318,544.08 : x
  2. Step 2: Convert to fraction form
    557,054.16/768,653.64 = 318,544.08/x
  3. Step 3: Cross multiply
    557,054.16x = 768,653.64 × 318,544.08
  4. Step 4: Simplify right side
    557,054.16x = 244,850,066,592.45
  5. Step 5: Solve for x
    x = 244,850,066,592.45/557,054.16
  6. Step 6: Final answer
    x = 439,544.45

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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.