Finding the Fourth Proportional to 1,170,415,620.39, 1,613,611,064.86 and 929,809,925.70
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Solution
The fourth proportional to 1,170,415,620.39, 1,613,611,064.86 and 929,809,925.70 is: 1,281,896,411.99
Step by Step Solution
- Step 1: Write the proportion equation
1,170,415,620.39 : 1,613,611,064.86 = 929,809,925.70 : x - Step 2: Convert to fraction form
1,170,415,620.39/1,613,611,064.86 = 929,809,925.70/x - Step 3: Cross multiply
1,170,415,620.39x = 1,613,611,064.86 × 929,809,925.70 - Step 4: Simplify right side
1,170,415,620.39x = 1,500,351,584,318,190,848 - Step 5: Solve for x
x = 1,500,351,584,318,190,848/1,170,415,620.39 - Step 6: Final answer
x = 1,281,896,411.99
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1.5x scale
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.