Finding the Fourth Proportional to 1,623,445,626,206.70, 2,240,356,432,527.20 and 891,881,423,661.78
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Solution
The fourth proportional to 1,623,445,626,206.70, 2,240,356,432,527.20 and 891,881,423,661.78 is: 1,230,797,171,335.49
Step by Step Solution
- Step 1: Write the proportion equation
1,623,445,626,206.70 : 2,240,356,432,527.20 = 891,881,423,661.78 : x - Step 2: Convert to fraction form
1,623,445,626,206.70/2,240,356,432,527.20 = 891,881,423,661.78/x - Step 3: Cross multiply
1,623,445,626,206.70x = 2,240,356,432,527.20 × 891,881,423,661.78 - Step 4: Simplify right side
1,623,445,626,206.70x = 1,998,132,284,552,185,951,289,344 - Step 5: Solve for x
x = 1,998,132,284,552,185,951,289,344/1,623,445,626,206.70 - Step 6: Final answer
x = 1,230,797,171,335.49
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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.