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Finding the Fourth Proportional to 609,543.60, 913,440.60 and 448,361.70

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Solution

The fourth proportional to 609,543.60, 913,440.60 and 448,361.70 is: 671,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,543.60 : 913,440.60 = 448,361.70 : x
  2. Step 2: Convert to fraction form
    609,543.60/913,440.60 = 448,361.70/x
  3. Step 3: Cross multiply
    609,543.60x = 913,440.60 × 448,361.70
  4. Step 4: Simplify right side
    609,543.60x = 409,551,780,265.02
  5. Step 5: Solve for x
    x = 409,551,780,265.02/609,543.60
  6. Step 6: Final answer
    x = 671,899.07

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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.