Home / 686,439.16-1,029,643.86-187,803.16

Finding the Fourth Proportional to 686,439.16, 1,029,643.86 and 187,803.16

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Solution

The fourth proportional to 686,439.16, 1,029,643.86 and 187,803.16 is: 281,700.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,439.16 : 1,029,643.86 = 187,803.16 : x
  2. Step 2: Convert to fraction form
    686,439.16/1,029,643.86 = 187,803.16/x
  3. Step 3: Cross multiply
    686,439.16x = 1,029,643.86 × 187,803.16
  4. Step 4: Simplify right side
    686,439.16x = 193,370,370,582.60
  5. Step 5: Solve for x
    x = 193,370,370,582.60/686,439.16
  6. Step 6: Final answer
    x = 281,700.67

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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.