Home / 485,004,810.20-727,507,215.30-139,969,693.40

Finding the Fourth Proportional to 485,004,810.20, 727,507,215.30 and 139,969,693.40

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Solution

The fourth proportional to 485,004,810.20, 727,507,215.30 and 139,969,693.40 is: 209,954,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,004,810.20 : 727,507,215.30 = 139,969,693.40 : x
  2. Step 2: Convert to fraction form
    485,004,810.20/727,507,215.30 = 139,969,693.40/x
  3. Step 3: Cross multiply
    485,004,810.20x = 727,507,215.30 × 139,969,693.40
  4. Step 4: Simplify right side
    485,004,810.20x = 101,828,961,871,828,784
  5. Step 5: Solve for x
    x = 101,828,961,871,828,784/485,004,810.20
  6. Step 6: Final answer
    x = 209,954,540.10

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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.