Home / 703,320,874.72-970,640,911.20-390,156,056.80

Finding the Fourth Proportional to 703,320,874.72, 970,640,911.20 and 390,156,056.80

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Solution

The fourth proportional to 703,320,874.72, 970,640,911.20 and 390,156,056.80 is: 538,447,590.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,320,874.72 : 970,640,911.20 = 390,156,056.80 : x
  2. Step 2: Convert to fraction form
    703,320,874.72/970,640,911.20 = 390,156,056.80/x
  3. Step 3: Cross multiply
    703,320,874.72x = 970,640,911.20 × 390,156,056.80
  4. Step 4: Simplify right side
    703,320,874.72x = 378,701,430,482,550,976
  5. Step 5: Solve for x
    x = 378,701,430,482,550,976/703,320,874.72
  6. Step 6: Final answer
    x = 538,447,590.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.