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Finding the Fourth Proportional to 557,759.07, 769,612.46 and 315,991.71

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Solution

The fourth proportional to 557,759.07, 769,612.46 and 315,991.71 is: 436,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,759.07 : 769,612.46 = 315,991.71 : x
  2. Step 2: Convert to fraction form
    557,759.07/769,612.46 = 315,991.71/x
  3. Step 3: Cross multiply
    557,759.07x = 769,612.46 × 315,991.71
  4. Step 4: Simplify right side
    557,759.07x = 243,191,155,692.75
  5. Step 5: Solve for x
    x = 243,191,155,692.75/557,759.07
  6. Step 6: Final answer
    x = 436,014.70

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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.