Home / 830,090.70-1,245,136.05-680,499.90

Finding the Fourth Proportional to 830,090.70, 1,245,136.05 and 680,499.90

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Solution

The fourth proportional to 830,090.70, 1,245,136.05 and 680,499.90 is: 1,020,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,090.70 : 1,245,136.05 = 680,499.90 : x
  2. Step 2: Convert to fraction form
    830,090.70/1,245,136.05 = 680,499.90/x
  3. Step 3: Cross multiply
    830,090.70x = 1,245,136.05 × 680,499.90
  4. Step 4: Simplify right side
    830,090.70x = 847,314,957,511.40
  5. Step 5: Solve for x
    x = 847,314,957,511.40/830,090.70
  6. Step 6: Final answer
    x = 1,020,749.85

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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.