Home / 780,518,707.49-1,170,846,879.28-220,285,527.21

Finding the Fourth Proportional to 780,518,707.49, 1,170,846,879.28 and 220,285,527.21

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Solution

The fourth proportional to 780,518,707.49, 1,170,846,879.28 and 220,285,527.21 is: 330,447,713.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,518,707.49 : 1,170,846,879.28 = 220,285,527.21 : x
  2. Step 2: Convert to fraction form
    780,518,707.49/1,170,846,879.28 = 220,285,527.21/x
  3. Step 3: Cross multiply
    780,518,707.49x = 1,170,846,879.28 × 220,285,527.21
  4. Step 4: Simplify right side
    780,518,707.49x = 257,920,622,083,827,296
  5. Step 5: Solve for x
    x = 257,920,622,083,827,296/780,518,707.49
  6. Step 6: Final answer
    x = 330,447,713.31

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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.