Finding the Fourth Proportional to 1,788,167,643.80, 2,685,312,099.30 and 971,874,267.80
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Solution
The fourth proportional to 1,788,167,643.80, 2,685,312,099.30 and 971,874,267.80 is: 1,459,474,864.88
Step by Step Solution
- Step 1: Write the proportion equation
1,788,167,643.80 : 2,685,312,099.30 = 971,874,267.80 : x - Step 2: Convert to fraction form
1,788,167,643.80/2,685,312,099.30 = 971,874,267.80/x - Step 3: Cross multiply
1,788,167,643.80x = 2,685,312,099.30 × 971,874,267.80 - Step 4: Simplify right side
1,788,167,643.80x = 2,609,785,730,321,668,608 - Step 5: Solve for x
x = 2,609,785,730,321,668,608/1,788,167,643.80 - Step 6: Final answer
x = 1,459,474,864.88
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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.