Finding the Fourth Proportional to 1,316,407,106.84, 1,816,602,483.28 and 721,671,265.04
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Solution
The fourth proportional to 1,316,407,106.84, 1,816,602,483.28 and 721,671,265.04 is: 995,884,787.75
Step by Step Solution
- Step 1: Write the proportion equation
1,316,407,106.84 : 1,816,602,483.28 = 721,671,265.04 : x - Step 2: Convert to fraction form
1,316,407,106.84/1,816,602,483.28 = 721,671,265.04/x - Step 3: Cross multiply
1,316,407,106.84x = 1,816,602,483.28 × 721,671,265.04 - Step 4: Simplify right side
1,316,407,106.84x = 1,310,989,812,183,482,880 - Step 5: Solve for x
x = 1,310,989,812,183,482,880/1,316,407,106.84 - Step 6: Final answer
x = 995,884,787.75
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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.