Finding the Fourth Proportional to 827,584,987.20, 1,241,377,480.80 and 679,631,812.80
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Solution
The fourth proportional to 827,584,987.20, 1,241,377,480.80 and 679,631,812.80 is: 1,019,447,719.20
Step by Step Solution
- Step 1: Write the proportion equation
827,584,987.20 : 1,241,377,480.80 = 679,631,812.80 : x - Step 2: Convert to fraction form
827,584,987.20/1,241,377,480.80 = 679,631,812.80/x - Step 3: Cross multiply
827,584,987.20x = 1,241,377,480.80 × 679,631,812.80 - Step 4: Simplify right side
827,584,987.20x = 843,679,627,645,201,152 - Step 5: Solve for x
x = 843,679,627,645,201,152/827,584,987.20 - Step 6: Final answer
x = 1,019,447,719.20
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1.5x scale
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.