Home / 830,521,348.60-1,245,782,022.90-400,539,652.60

Finding the Fourth Proportional to 830,521,348.60, 1,245,782,022.90 and 400,539,652.60

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Solution

The fourth proportional to 830,521,348.60, 1,245,782,022.90 and 400,539,652.60 is: 600,809,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,521,348.60 : 1,245,782,022.90 = 400,539,652.60 : x
  2. Step 2: Convert to fraction form
    830,521,348.60/1,245,782,022.90 = 400,539,652.60/x
  3. Step 3: Cross multiply
    830,521,348.60x = 1,245,782,022.90 × 400,539,652.60
  4. Step 4: Simplify right side
    830,521,348.60x = 498,985,098,667,691,328
  5. Step 5: Solve for x
    x = 498,985,098,667,691,328/830,521,348.60
  6. Step 6: Final answer
    x = 600,809,478.90

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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.