Finding the Fourth Proportional to 1,990,658,117.40, 2,985,987,176.10 and 1,369,872,043.80
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Solution
The fourth proportional to 1,990,658,117.40, 2,985,987,176.10 and 1,369,872,043.80 is: 2,054,808,065.70
Step by Step Solution
- Step 1: Write the proportion equation
1,990,658,117.40 : 2,985,987,176.10 = 1,369,872,043.80 : x - Step 2: Convert to fraction form
1,990,658,117.40/2,985,987,176.10 = 1,369,872,043.80/x - Step 3: Cross multiply
1,990,658,117.40x = 2,985,987,176.10 × 1,369,872,043.80 - Step 4: Simplify right side
1,990,658,117.40x = 4,090,420,355,684,697,088 - Step 5: Solve for x
x = 4,090,420,355,684,697,088/1,990,658,117.40 - Step 6: Final answer
x = 2,054,808,065.70
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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.