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Finding the Fourth Proportional to 713,888.36, 985,000.74 and 427,299.56

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Solution

The fourth proportional to 713,888.36, 985,000.74 and 427,299.56 is: 589,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,888.36 : 985,000.74 = 427,299.56 : x
  2. Step 2: Convert to fraction form
    713,888.36/985,000.74 = 427,299.56/x
  3. Step 3: Cross multiply
    713,888.36x = 985,000.74 × 427,299.56
  4. Step 4: Simplify right side
    713,888.36x = 420,890,382,801.67
  5. Step 5: Solve for x
    x = 420,890,382,801.67/713,888.36
  6. Step 6: Final answer
    x = 589,574.51

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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.