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Finding the Fourth Proportional to 712,580.25, 983,361.96 and 385,896.72

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Solution

The fourth proportional to 712,580.25, 983,361.96 and 385,896.72 is: 532,538.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,580.25 : 983,361.96 = 385,896.72 : x
  2. Step 2: Convert to fraction form
    712,580.25/983,361.96 = 385,896.72/x
  3. Step 3: Cross multiply
    712,580.25x = 983,361.96 × 385,896.72
  4. Step 4: Simplify right side
    712,580.25x = 379,476,154,936.77
  5. Step 5: Solve for x
    x = 379,476,154,936.77/712,580.25
  6. Step 6: Final answer
    x = 532,538.13

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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.