Finding the Fourth Proportional to 1,121,010,737.95, 1,547,041,816.40 and 644,701,478.71
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Solution
The fourth proportional to 1,121,010,737.95, 1,547,041,816.40 and 644,701,478.71 is: 889,715,069.53
Step by Step Solution
- Step 1: Write the proportion equation
1,121,010,737.95 : 1,547,041,816.40 = 644,701,478.71 : x - Step 2: Convert to fraction form
1,121,010,737.95/1,547,041,816.40 = 644,701,478.71/x - Step 3: Cross multiply
1,121,010,737.95x = 1,547,041,816.40 × 644,701,478.71 - Step 4: Simplify right side
1,121,010,737.95x = 997,380,146,659,284,480 - Step 5: Solve for x
x = 997,380,146,659,284,480/1,121,010,737.95 - Step 6: Final answer
x = 889,715,069.53
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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.