Finding the Fourth Proportional to 1,220,346,095.30, 1,830,519,142.95 and 402,415,093.70
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Solution
The fourth proportional to 1,220,346,095.30, 1,830,519,142.95 and 402,415,093.70 is: 603,622,640.55
Step by Step Solution
- Step 1: Write the proportion equation
1,220,346,095.30 : 1,830,519,142.95 = 402,415,093.70 : x - Step 2: Convert to fraction form
1,220,346,095.30/1,830,519,142.95 = 402,415,093.70/x - Step 3: Cross multiply
1,220,346,095.30x = 1,830,519,142.95 × 402,415,093.70 - Step 4: Simplify right side
1,220,346,095.30x = 736,628,532,429,867,904 - Step 5: Solve for x
x = 736,628,532,429,867,904/1,220,346,095.30 - Step 6: Final answer
x = 603,622,640.55
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Double scale
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1.5x scale
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.