Home / 388,078,365.80-581,267,243.10-344,996,215.40

Finding the Fourth Proportional to 388,078,365.80, 581,267,243.10 and 344,996,215.40

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Solution

The fourth proportional to 388,078,365.80, 581,267,243.10 and 344,996,215.40 is: 516,738,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,078,365.80 : 581,267,243.10 = 344,996,215.40 : x
  2. Step 2: Convert to fraction form
    388,078,365.80/581,267,243.10 = 344,996,215.40/x
  3. Step 3: Cross multiply
    388,078,365.80x = 581,267,243.10 × 344,996,215.40
  4. Step 4: Simplify right side
    388,078,365.80x = 200,534,999,005,491,744
  5. Step 5: Solve for x
    x = 200,534,999,005,491,744/388,078,365.80
  6. Step 6: Final answer
    x = 516,738,413.37

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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.