Finding the Fourth Proportional to 1,225,281,422, 1,690,899,153.84 and 668,366,945.84
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Solution
The fourth proportional to 1,225,281,422, 1,690,899,153.84 and 668,366,945.84 is: 922,352,271.80
Step by Step Solution
- Step 1: Write the proportion equation
1,225,281,422 : 1,690,899,153.84 = 668,366,945.84 : x - Step 2: Convert to fraction form
1,225,281,422/1,690,899,153.84 = 668,366,945.84/x - Step 3: Cross multiply
1,225,281,422x = 1,690,899,153.84 × 668,366,945.84 - Step 4: Simplify right side
1,225,281,422x = 1,130,141,103,175,481,088 - Step 5: Solve for x
x = 1,130,141,103,175,481,088/1,225,281,422 - Step 6: Final answer
x = 922,352,271.80
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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.