Home / 1,207,228,010.10-1,810,842,015.15-430,898,997.30

Finding the Fourth Proportional to 1,207,228,010.10, 1,810,842,015.15 and 430,898,997.30

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Solution

The fourth proportional to 1,207,228,010.10, 1,810,842,015.15 and 430,898,997.30 is: 646,348,495.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,228,010.10 : 1,810,842,015.15 = 430,898,997.30 : x
  2. Step 2: Convert to fraction form
    1,207,228,010.10/1,810,842,015.15 = 430,898,997.30/x
  3. Step 3: Cross multiply
    1,207,228,010.10x = 1,810,842,015.15 × 430,898,997.30
  4. Step 4: Simplify right side
    1,207,228,010.10x = 780,290,008,596,846,464
  5. Step 5: Solve for x
    x = 780,290,008,596,846,464/1,207,228,010.10
  6. Step 6: Final answer
    x = 646,348,495.95

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Double scale
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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.