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Finding the Fourth Proportional to 557,263.72, 769,026.89 and 315,593.34

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Solution

The fourth proportional to 557,263.72, 769,026.89 and 315,593.34 is: 435,520.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,263.72 : 769,026.89 = 315,593.34 : x
  2. Step 2: Convert to fraction form
    557,263.72/769,026.89 = 315,593.34/x
  3. Step 3: Cross multiply
    557,263.72x = 769,026.89 × 315,593.34
  4. Step 4: Simplify right side
    557,263.72x = 242,699,762,670.05
  5. Step 5: Solve for x
    x = 242,699,762,670.05/557,263.72
  6. Step 6: Final answer
    x = 435,520.48

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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.