Home / 1,259,516,163.20-1,889,628,139.20-613,304,988.80

Finding the Fourth Proportional to 1,259,516,163.20, 1,889,628,139.20 and 613,304,988.80

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Solution

The fourth proportional to 1,259,516,163.20, 1,889,628,139.20 and 613,304,988.80 is: 920,129,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,516,163.20 : 1,889,628,139.20 = 613,304,988.80 : x
  2. Step 2: Convert to fraction form
    1,259,516,163.20/1,889,628,139.20 = 613,304,988.80/x
  3. Step 3: Cross multiply
    1,259,516,163.20x = 1,889,628,139.20 × 613,304,988.80
  4. Step 4: Simplify right side
    1,259,516,163.20x = 1,158,918,364,748,220,672
  5. Step 5: Solve for x
    x = 1,158,918,364,748,220,672/1,259,516,163.20
  6. Step 6: Final answer
    x = 920,129,807.47

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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.