Home / 809,511,984.70-1,117,126,912.60-438,234,016.06

Finding the Fourth Proportional to 809,511,984.70, 1,117,126,912.60 and 438,234,016.06

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Solution

The fourth proportional to 809,511,984.70, 1,117,126,912.60 and 438,234,016.06 is: 604,763,144.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,511,984.70 : 1,117,126,912.60 = 438,234,016.06 : x
  2. Step 2: Convert to fraction form
    809,511,984.70/1,117,126,912.60 = 438,234,016.06/x
  3. Step 3: Cross multiply
    809,511,984.70x = 1,117,126,912.60 × 438,234,016.06
  4. Step 4: Simplify right side
    809,511,984.70x = 489,563,013,357,406,592
  5. Step 5: Solve for x
    x = 489,563,013,357,406,592/809,511,984.70
  6. Step 6: Final answer
    x = 604,763,144.48

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Double scale
Find fourth proportional to 809,511,985.70, 1,117,126,913.98 and 438,234,017.06
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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.