Home / 686,800.20-1,030,200.30-434,857.80

Finding the Fourth Proportional to 686,800.20, 1,030,200.30 and 434,857.80

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Solution

The fourth proportional to 686,800.20, 1,030,200.30 and 434,857.80 is: 652,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,800.20 : 1,030,200.30 = 434,857.80 : x
  2. Step 2: Convert to fraction form
    686,800.20/1,030,200.30 = 434,857.80/x
  3. Step 3: Cross multiply
    686,800.20x = 1,030,200.30 × 434,857.80
  4. Step 4: Simplify right side
    686,800.20x = 447,990,636,017.34
  5. Step 5: Solve for x
    x = 447,990,636,017.34/686,800.20
  6. Step 6: Final answer
    x = 652,286.70

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1.5x scale

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.