Finding the Fourth Proportional to 1,993,069,589.40, 2,989,588,637.70 and 519,206,549.40
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Solution
The fourth proportional to 1,993,069,589.40, 2,989,588,637.70 and 519,206,549.40 is: 778,805,722.07
Step by Step Solution
- Step 1: Write the proportion equation
1,993,069,589.40 : 2,989,588,637.70 = 519,206,549.40 : x - Step 2: Convert to fraction form
1,993,069,589.40/2,989,588,637.70 = 519,206,549.40/x - Step 3: Cross multiply
1,993,069,589.40x = 2,989,588,637.70 × 519,206,549.40 - Step 4: Simplify right side
1,993,069,589.40x = 1,552,214,000,705,663,488 - Step 5: Solve for x
x = 1,552,214,000,705,663,488/1,993,069,589.40 - Step 6: Final answer
x = 778,805,722.07
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.