Home / 1,119,643,255.80-1,678,233,165.30-392,257,553.40

Finding the Fourth Proportional to 1,119,643,255.80, 1,678,233,165.30 and 392,257,553.40

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Solution

The fourth proportional to 1,119,643,255.80, 1,678,233,165.30 and 392,257,553.40 is: 587,954,807.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,643,255.80 : 1,678,233,165.30 = 392,257,553.40 : x
  2. Step 2: Convert to fraction form
    1,119,643,255.80/1,678,233,165.30 = 392,257,553.40/x
  3. Step 3: Cross multiply
    1,119,643,255.80x = 1,678,233,165.30 × 392,257,553.40
  4. Step 4: Simplify right side
    1,119,643,255.80x = 658,299,635,455,315,712
  5. Step 5: Solve for x
    x = 658,299,635,455,315,712/1,119,643,255.80
  6. Step 6: Final answer
    x = 587,954,807.97

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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.