Home / 812,422,368.45-1,217,783,016.61-339,992,088.31

Finding the Fourth Proportional to 812,422,368.45, 1,217,783,016.61 and 339,992,088.31

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Solution

The fourth proportional to 812,422,368.45, 1,217,783,016.61 and 339,992,088.31 is: 509,632,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,422,368.45 : 1,217,783,016.61 = 339,992,088.31 : x
  2. Step 2: Convert to fraction form
    812,422,368.45/1,217,783,016.61 = 339,992,088.31/x
  3. Step 3: Cross multiply
    812,422,368.45x = 1,217,783,016.61 × 339,992,088.31
  4. Step 4: Simplify right side
    812,422,368.45x = 414,036,590,925,685,312
  5. Step 5: Solve for x
    x = 414,036,590,925,685,312/812,422,368.45
  6. Step 6: Final answer
    x = 509,632,190.11

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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.