Home / 686,800.40-1,030,200.60-313,552.40

Finding the Fourth Proportional to 686,800.40, 1,030,200.60 and 313,552.40

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Solution

The fourth proportional to 686,800.40, 1,030,200.60 and 313,552.40 is: 470,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,800.40 : 1,030,200.60 = 313,552.40 : x
  2. Step 2: Convert to fraction form
    686,800.40/1,030,200.60 = 313,552.40/x
  3. Step 3: Cross multiply
    686,800.40x = 1,030,200.60 × 313,552.40
  4. Step 4: Simplify right side
    686,800.40x = 323,021,870,611.44
  5. Step 5: Solve for x
    x = 323,021,870,611.44/686,800.40
  6. Step 6: Final answer
    x = 470,328.60

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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.