Finding the Fourth Proportional to 1,329,697,712.70, 1,994,546,569.05 and 409,454,477.10
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Solution
The fourth proportional to 1,329,697,712.70, 1,994,546,569.05 and 409,454,477.10 is: 614,181,715.65
Step by Step Solution
- Step 1: Write the proportion equation
1,329,697,712.70 : 1,994,546,569.05 = 409,454,477.10 : x - Step 2: Convert to fraction form
1,329,697,712.70/1,994,546,569.05 = 409,454,477.10/x - Step 3: Cross multiply
1,329,697,712.70x = 1,994,546,569.05 × 409,454,477.10 - Step 4: Simplify right side
1,329,697,712.70x = 816,676,022,481,966,848 - Step 5: Solve for x
x = 816,676,022,481,966,848/1,329,697,712.70 - Step 6: Final answer
x = 614,181,715.65
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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.