Finding the Fourth Proportional to 1,223,657,353,943.70, 1,688,652,398,306.60 and 667,474,601,428.70
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Solution
The fourth proportional to 1,223,657,353,943.70, 1,688,652,398,306.60 and 667,474,601,428.70 is: 921,117,813,641.79
Step by Step Solution
- Step 1: Write the proportion equation
1,223,657,353,943.70 : 1,688,652,398,306.60 = 667,474,601,428.70 : x - Step 2: Convert to fraction form
1,223,657,353,943.70/1,688,652,398,306.60 = 667,474,601,428.70/x - Step 3: Cross multiply
1,223,657,353,943.70x = 1,688,652,398,306.60 × 667,474,601,428.70 - Step 4: Simplify right side
1,223,657,353,943.70x = 1,127,132,586,511,316,119,715,840 - Step 5: Solve for x
x = 1,127,132,586,511,316,119,715,840/1,223,657,353,943.70 - Step 6: Final answer
x = 921,117,813,641.79
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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.