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Finding the Fourth Proportional to 384,726.90, 576,399.15 and 329,430.90

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Solution

The fourth proportional to 384,726.90, 576,399.15 and 329,430.90 is: 493,554.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,726.90 : 576,399.15 = 329,430.90 : x
  2. Step 2: Convert to fraction form
    384,726.90/576,399.15 = 329,430.90/x
  3. Step 3: Cross multiply
    384,726.90x = 576,399.15 × 329,430.90
  4. Step 4: Simplify right side
    384,726.90x = 189,883,690,743.74
  5. Step 5: Solve for x
    x = 189,883,690,743.74/384,726.90
  6. Step 6: Final answer
    x = 493,554.49

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1.5x scale

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.