Finding the Fourth Proportional to 1,119,746,815.20, 1,680,460,030.80 and 574,207,538.40
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Solution
The fourth proportional to 1,119,746,815.20, 1,680,460,030.80 and 574,207,538.40 is: 861,741,962.17
Step by Step Solution
- Step 1: Write the proportion equation
1,119,746,815.20 : 1,680,460,030.80 = 574,207,538.40 : x - Step 2: Convert to fraction form
1,119,746,815.20/1,680,460,030.80 = 574,207,538.40/x - Step 3: Cross multiply
1,119,746,815.20x = 1,680,460,030.80 × 574,207,538.40 - Step 4: Simplify right side
1,119,746,815.20x = 964,932,817,665,256,064 - Step 5: Solve for x
x = 964,932,817,665,256,064/1,119,746,815.20 - Step 6: Final answer
x = 861,741,962.17
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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.