Finding the Fourth Proportional to 1,225,283,081.44, 1,690,901,443.98 and 668,368,605.28
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Solution
The fourth proportional to 1,225,283,081.44, 1,690,901,443.98 and 668,368,605.28 is: 922,354,561.89
Step by Step Solution
- Step 1: Write the proportion equation
1,225,283,081.44 : 1,690,901,443.98 = 668,368,605.28 : x - Step 2: Convert to fraction form
1,225,283,081.44/1,690,901,443.98 = 668,368,605.28/x - Step 3: Cross multiply
1,225,283,081.44x = 1,690,901,443.98 × 668,368,605.28 - Step 4: Simplify right side
1,225,283,081.44x = 1,130,145,439,778,850,560 - Step 5: Solve for x
x = 1,130,145,439,778,850,560/1,225,283,081.44 - Step 6: Final answer
x = 922,354,561.89
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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.