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Finding the Fourth Proportional to 557,246.49, 768,998.12 and 315,505.23

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Solution

The fourth proportional to 557,246.49, 768,998.12 and 315,505.23 is: 435,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,246.49 : 768,998.12 = 315,505.23 : x
  2. Step 2: Convert to fraction form
    557,246.49/768,998.12 = 315,505.23/x
  3. Step 3: Cross multiply
    557,246.49x = 768,998.12 × 315,505.23
  4. Step 4: Simplify right side
    557,246.49x = 242,622,927,142.64
  5. Step 5: Solve for x
    x = 242,622,927,142.64/557,246.49
  6. Step 6: Final answer
    x = 435,396.06

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1.5x scale

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.