Finding the Fourth Proportional to 1,245,778,865.80, 1,868,668,298.70 and 325,748,206.60
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Solution
The fourth proportional to 1,245,778,865.80, 1,868,668,298.70 and 325,748,206.60 is: 488,622,309.90
Step by Step Solution
- Step 1: Write the proportion equation
1,245,778,865.80 : 1,868,668,298.70 = 325,748,206.60 : x - Step 2: Convert to fraction form
1,245,778,865.80/1,868,668,298.70 = 325,748,206.60/x - Step 3: Cross multiply
1,245,778,865.80x = 1,868,668,298.70 × 325,748,206.60 - Step 4: Simplify right side
1,245,778,865.80x = 608,715,347,031,798,144 - Step 5: Solve for x
x = 608,715,347,031,798,144/1,245,778,865.80 - Step 6: Final answer
x = 488,622,309.90
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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.