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Finding the Fourth Proportional to 575,408.45, 863,361.65 and 308,857.70

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Solution

The fourth proportional to 575,408.45, 863,361.65 and 308,857.70 is: 463,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,408.45 : 863,361.65 = 308,857.70 : x
  2. Step 2: Convert to fraction form
    575,408.45/863,361.65 = 308,857.70/x
  3. Step 3: Cross multiply
    575,408.45x = 863,361.65 × 308,857.70
  4. Step 4: Simplify right side
    575,408.45x = 266,655,896,417.75
  5. Step 5: Solve for x
    x = 266,655,896,417.75/575,408.45
  6. Step 6: Final answer
    x = 463,420.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.