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Finding the Fourth Proportional to 716,337.60, 988,548.22 and 394,072.21

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Solution

The fourth proportional to 716,337.60, 988,548.22 and 394,072.21 is: 543,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,337.60 : 988,548.22 = 394,072.21 : x
  2. Step 2: Convert to fraction form
    716,337.60/988,548.22 = 394,072.21/x
  3. Step 3: Cross multiply
    716,337.60x = 988,548.22 × 394,072.21
  4. Step 4: Simplify right side
    716,337.60x = 389,559,381,746.97
  5. Step 5: Solve for x
    x = 389,559,381,746.97/716,337.60
  6. Step 6: Final answer
    x = 543,820.93

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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.