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Finding the Fourth Proportional to 556,846.85, 768,460.16 and 315,129.39

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Solution

The fourth proportional to 556,846.85, 768,460.16 and 315,129.39 is: 434,885.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,846.85 : 768,460.16 = 315,129.39 : x
  2. Step 2: Convert to fraction form
    556,846.85/768,460.16 = 315,129.39/x
  3. Step 3: Cross multiply
    556,846.85x = 768,460.16 × 315,129.39
  4. Step 4: Simplify right side
    556,846.85x = 242,164,379,366.20
  5. Step 5: Solve for x
    x = 242,164,379,366.20/556,846.85
  6. Step 6: Final answer
    x = 434,885.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.