Home / 646,766,105.40-970,290,875.70-209,992,462.20

Finding the Fourth Proportional to 646,766,105.40, 970,290,875.70 and 209,992,462.20

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Solution

The fourth proportional to 646,766,105.40, 970,290,875.70 and 209,992,462.20 is: 315,034,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,766,105.40 : 970,290,875.70 = 209,992,462.20 : x
  2. Step 2: Convert to fraction form
    646,766,105.40/970,290,875.70 = 209,992,462.20/x
  3. Step 3: Cross multiply
    646,766,105.40x = 970,290,875.70 × 209,992,462.20
  4. Step 4: Simplify right side
    646,766,105.40x = 203,753,770,038,437,152
  5. Step 5: Solve for x
    x = 203,753,770,038,437,152/646,766,105.40
  6. Step 6: Final answer
    x = 315,034,706.27

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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.