Home / 679,509,055.65-1,019,264,765.80-213,206,264.91

Finding the Fourth Proportional to 679,509,055.65, 1,019,264,765.80 and 213,206,264.91

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Solution

The fourth proportional to 679,509,055.65, 1,019,264,765.80 and 213,206,264.91 is: 319,809,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,509,055.65 : 1,019,264,765.80 = 213,206,264.91 : x
  2. Step 2: Convert to fraction form
    679,509,055.65/1,019,264,765.80 = 213,206,264.91/x
  3. Step 3: Cross multiply
    679,509,055.65x = 1,019,264,765.80 × 213,206,264.91
  4. Step 4: Simplify right side
    679,509,055.65x = 217,313,633,670,583,904
  5. Step 5: Solve for x
    x = 217,313,633,670,583,904/679,509,055.65
  6. Step 6: Final answer
    x = 319,809,768.34

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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.