Finding the Fourth Proportional to 1,121,090,329.84, 1,547,117,639.76 and 619,288,718.08
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Solution
The fourth proportional to 1,121,090,329.84, 1,547,117,639.76 and 619,288,718.08 is: 854,625,603.61
Step by Step Solution
- Step 1: Write the proportion equation
1,121,090,329.84 : 1,547,117,639.76 = 619,288,718.08 : x - Step 2: Convert to fraction form
1,121,090,329.84/1,547,117,639.76 = 619,288,718.08/x - Step 3: Cross multiply
1,121,090,329.84x = 1,547,117,639.76 × 619,288,718.08 - Step 4: Simplify right side
1,121,090,329.84x = 958,112,499,845,925,760 - Step 5: Solve for x
x = 958,112,499,845,925,760/1,121,090,329.84 - Step 6: Final answer
x = 854,625,603.61
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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.