Home / 12,472,666,229.69-17,208,042,040.42-7,116,378,678.89

Finding the Fourth Proportional to 12,472,666,229.69, 17,208,042,040.42 and 7,116,378,678.89

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Solution

The fourth proportional to 12,472,666,229.69, 17,208,042,040.42 and 7,116,378,678.89 is: 9,818,184,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472,666,229.69 : 17,208,042,040.42 = 7,116,378,678.89 : x
  2. Step 2: Convert to fraction form
    12,472,666,229.69/17,208,042,040.42 = 7,116,378,678.89/x
  3. Step 3: Cross multiply
    12,472,666,229.69x = 17,208,042,040.42 × 7,116,378,678.89
  4. Step 4: Simplify right side
    12,472,666,229.69x = 122,458,943,481,887,653,888
  5. Step 5: Solve for x
    x = 122,458,943,481,887,653,888/12,472,666,229.69
  6. Step 6: Final answer
    x = 9,818,184,919.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.