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Finding the Fourth Proportional to 560,360,772.80, 839,407,418.40 and 388,032,171.20

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Solution

The fourth proportional to 560,360,772.80, 839,407,418.40 and 388,032,171.20 is: 581,263,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,360,772.80 : 839,407,418.40 = 388,032,171.20 : x
  2. Step 2: Convert to fraction form
    560,360,772.80/839,407,418.40 = 388,032,171.20/x
  3. Step 3: Cross multiply
    560,360,772.80x = 839,407,418.40 × 388,032,171.20
  4. Step 4: Simplify right side
    560,360,772.80x = 325,717,083,083,138,816
  5. Step 5: Solve for x
    x = 325,717,083,083,138,816/560,360,772.80
  6. Step 6: Final answer
    x = 581,263,177.03

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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.