Home / 426,492,010.20-639,738,015.30-357,617,256.60

Finding the Fourth Proportional to 426,492,010.20, 639,738,015.30 and 357,617,256.60

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Solution

The fourth proportional to 426,492,010.20, 639,738,015.30 and 357,617,256.60 is: 536,425,884.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,010.20 : 639,738,015.30 = 357,617,256.60 : x
  2. Step 2: Convert to fraction form
    426,492,010.20/639,738,015.30 = 357,617,256.60/x
  3. Step 3: Cross multiply
    426,492,010.20x = 639,738,015.30 × 357,617,256.60
  4. Step 4: Simplify right side
    426,492,010.20x = 228,781,353,974,314,816
  5. Step 5: Solve for x
    x = 228,781,353,974,314,816/426,492,010.20
  6. Step 6: Final answer
    x = 536,425,884.90

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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.