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Finding the Fourth Proportional to 557,976.20, 770,003.94 and 316,304.36

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Solution

The fourth proportional to 557,976.20, 770,003.94 and 316,304.36 is: 436,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,976.20 : 770,003.94 = 316,304.36 : x
  2. Step 2: Convert to fraction form
    557,976.20/770,003.94 = 316,304.36/x
  3. Step 3: Cross multiply
    557,976.20x = 770,003.94 × 316,304.36
  4. Step 4: Simplify right side
    557,976.20x = 243,555,603,439.18
  5. Step 5: Solve for x
    x = 243,555,603,439.18/557,976.20
  6. Step 6: Final answer
    x = 436,498.19

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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.