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Finding the Fourth Proportional to 713,787.56, 985,109.13 and 427,307.57

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Solution

The fourth proportional to 713,787.56, 985,109.13 and 427,307.57 is: 589,733.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,787.56 : 985,109.13 = 427,307.57 : x
  2. Step 2: Convert to fraction form
    713,787.56/985,109.13 = 427,307.57/x
  3. Step 3: Cross multiply
    713,787.56x = 985,109.13 × 427,307.57
  4. Step 4: Simplify right side
    713,787.56x = 420,944,583,599.57
  5. Step 5: Solve for x
    x = 420,944,583,599.57/713,787.56
  6. Step 6: Final answer
    x = 589,733.71

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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.