Home / 809,511,921.84-1,117,126,825.90-438,233,953.22

Finding the Fourth Proportional to 809,511,921.84, 1,117,126,825.90 and 438,233,953.22

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Solution

The fourth proportional to 809,511,921.84, 1,117,126,825.90 and 438,233,953.22 is: 604,763,057.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,511,921.84 : 1,117,126,825.90 = 438,233,953.22 : x
  2. Step 2: Convert to fraction form
    809,511,921.84/1,117,126,825.90 = 438,233,953.22/x
  3. Step 3: Cross multiply
    809,511,921.84x = 1,117,126,825.90 × 438,233,953.22
  4. Step 4: Simplify right side
    809,511,921.84x = 489,562,905,155,586,432
  5. Step 5: Solve for x
    x = 489,562,905,155,586,432/809,511,921.84
  6. Step 6: Final answer
    x = 604,763,057.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.