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Finding the Fourth Proportional to 557,575.94, 769,492.84 and 315,860.50

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Solution

The fourth proportional to 557,575.94, 769,492.84 and 315,860.50 is: 435,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,575.94 : 769,492.84 = 315,860.50 : x
  2. Step 2: Convert to fraction form
    557,575.94/769,492.84 = 315,860.50/x
  3. Step 3: Cross multiply
    557,575.94x = 769,492.84 × 315,860.50
  4. Step 4: Simplify right side
    557,575.94x = 243,052,393,188.82
  5. Step 5: Solve for x
    x = 243,052,393,188.82/557,575.94
  6. Step 6: Final answer
    x = 435,909.04

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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.