Finding the Fourth Proportional to 2,155,329,307.80, 3,232,993,961.70 and 930,889,243.80
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Solution
The fourth proportional to 2,155,329,307.80, 3,232,993,961.70 and 930,889,243.80 is: 1,396,333,865.70
Step by Step Solution
- Step 1: Write the proportion equation
2,155,329,307.80 : 3,232,993,961.70 = 930,889,243.80 : x - Step 2: Convert to fraction form
2,155,329,307.80/3,232,993,961.70 = 930,889,243.80/x - Step 3: Cross multiply
2,155,329,307.80x = 3,232,993,961.70 × 930,889,243.80 - Step 4: Simplify right side
2,155,329,307.80x = 3,009,559,304,216,878,592 - Step 5: Solve for x
x = 3,009,559,304,216,878,592/2,155,329,307.80 - Step 6: Final answer
x = 1,396,333,865.70
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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.