Home / 12,720,871,359.72-19,090,023,112.62-4,439,758,405.32

Finding the Fourth Proportional to 12,720,871,359.72, 19,090,023,112.62 and 4,439,758,405.32

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Solution

The fourth proportional to 12,720,871,359.72, 19,090,023,112.62 and 4,439,758,405.32 is: 6,662,679,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720,871,359.72 : 19,090,023,112.62 = 4,439,758,405.32 : x
  2. Step 2: Convert to fraction form
    12,720,871,359.72/19,090,023,112.62 = 4,439,758,405.32/x
  3. Step 3: Cross multiply
    12,720,871,359.72x = 19,090,023,112.62 × 4,439,758,405.32
  4. Step 4: Simplify right side
    12,720,871,359.72x = 84,755,090,572,007,702,528
  5. Step 5: Solve for x
    x = 84,755,090,572,007,702,528/12,720,871,359.72
  6. Step 6: Final answer
    x = 6,662,679,636.90

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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.