Home / 830,103.70-1,245,155.55-680,512.90

Finding the Fourth Proportional to 830,103.70, 1,245,155.55 and 680,512.90

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Solution

The fourth proportional to 830,103.70, 1,245,155.55 and 680,512.90 is: 1,020,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,103.70 : 1,245,155.55 = 680,512.90 : x
  2. Step 2: Convert to fraction form
    830,103.70/1,245,155.55 = 680,512.90/x
  3. Step 3: Cross multiply
    830,103.70x = 1,245,155.55 × 680,512.90
  4. Step 4: Simplify right side
    830,103.70x = 847,344,414,281.60
  5. Step 5: Solve for x
    x = 847,344,414,281.60/830,103.70
  6. Step 6: Final answer
    x = 1,020,769.35

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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.