Home / 1,317,247,999.20-1,975,871,998.80-347,899,615.20

Finding the Fourth Proportional to 1,317,247,999.20, 1,975,871,998.80 and 347,899,615.20

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Solution

The fourth proportional to 1,317,247,999.20, 1,975,871,998.80 and 347,899,615.20 is: 521,849,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,247,999.20 : 1,975,871,998.80 = 347,899,615.20 : x
  2. Step 2: Convert to fraction form
    1,317,247,999.20/1,975,871,998.80 = 347,899,615.20/x
  3. Step 3: Cross multiply
    1,317,247,999.20x = 1,975,871,998.80 × 347,899,615.20
  4. Step 4: Simplify right side
    1,317,247,999.20x = 687,405,108,066,974,848
  5. Step 5: Solve for x
    x = 687,405,108,066,974,848/1,317,247,999.20
  6. Step 6: Final answer
    x = 521,849,422.80

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Double scale
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Similar ratio
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1.5x scale

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.