Finding the Fourth Proportional to 1,225,281,415, 1,690,899,144.18 and 668,366,938.84
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Solution
The fourth proportional to 1,225,281,415, 1,690,899,144.18 and 668,366,938.84 is: 922,352,262.14
Step by Step Solution
- Step 1: Write the proportion equation
1,225,281,415 : 1,690,899,144.18 = 668,366,938.84 : x - Step 2: Convert to fraction form
1,225,281,415/1,690,899,144.18 = 668,366,938.84/x - Step 3: Cross multiply
1,225,281,415x = 1,690,899,144.18 × 668,366,938.84 - Step 4: Simplify right side
1,225,281,415x = 1,130,141,084,882,762,496 - Step 5: Solve for x
x = 1,130,141,084,882,762,496/1,225,281,415 - Step 6: Final answer
x = 922,352,262.14
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1.5x scale
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.