Home / 646,554,960.20-969,840,838.37-215,733,456.20

Finding the Fourth Proportional to 646,554,960.20, 969,840,838.37 and 215,733,456.20

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Solution

The fourth proportional to 646,554,960.20, 969,840,838.37 and 215,733,456.20 is: 323,602,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,554,960.20 : 969,840,838.37 = 215,733,456.20 : x
  2. Step 2: Convert to fraction form
    646,554,960.20/969,840,838.37 = 215,733,456.20/x
  3. Step 3: Cross multiply
    646,554,960.20x = 969,840,838.37 × 215,733,456.20
  4. Step 4: Simplify right side
    646,554,960.20x = 209,227,116,019,537,792
  5. Step 5: Solve for x
    x = 209,227,116,019,537,792/646,554,960.20
  6. Step 6: Final answer
    x = 323,602,986.44

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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.