Home / 806,639.13-1,210,706.39-407,560.38

Finding the Fourth Proportional to 806,639.13, 1,210,706.39 and 407,560.38

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Solution

The fourth proportional to 806,639.13, 1,210,706.39 and 407,560.38 is: 611,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,639.13 : 1,210,706.39 = 407,560.38 : x
  2. Step 2: Convert to fraction form
    806,639.13/1,210,706.39 = 407,560.38/x
  3. Step 3: Cross multiply
    806,639.13x = 1,210,706.39 × 407,560.38
  4. Step 4: Simplify right side
    806,639.13x = 493,435,954,339.03
  5. Step 5: Solve for x
    x = 493,435,954,339.03/806,639.13
  6. Step 6: Final answer
    x = 611,718.35

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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.