Finding the Fourth Proportional to 919,690,839.80, 1,268,983,898.06 and 528,474,681.08
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Solution
The fourth proportional to 919,690,839.80, 1,268,983,898.06 and 528,474,681.08 is: 729,186,191.49
Step by Step Solution
- Step 1: Write the proportion equation
919,690,839.80 : 1,268,983,898.06 = 528,474,681.08 : x - Step 2: Convert to fraction form
919,690,839.80/1,268,983,898.06 = 528,474,681.08/x - Step 3: Cross multiply
919,690,839.80x = 1,268,983,898.06 × 528,474,681.08 - Step 4: Simplify right side
919,690,839.80x = 670,625,860,822,913,664 - Step 5: Solve for x
x = 670,625,860,822,913,664/919,690,839.80 - Step 6: Final answer
x = 729,186,191.49
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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.