Finding the Fourth Proportional to 813,751,501.12, 1,220,512,271.58 and 260,982,090.88
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Solution
The fourth proportional to 813,751,501.12, 1,220,512,271.58 and 260,982,090.88 is: 391,436,260.51
Step by Step Solution
- Step 1: Write the proportion equation
813,751,501.12 : 1,220,512,271.58 = 260,982,090.88 : x - Step 2: Convert to fraction form
813,751,501.12/1,220,512,271.58 = 260,982,090.88/x - Step 3: Cross multiply
813,751,501.12x = 1,220,512,271.58 × 260,982,090.88 - Step 4: Simplify right side
813,751,501.12x = 318,531,844,581,646,784 - Step 5: Solve for x
x = 318,531,844,581,646,784/813,751,501.12 - Step 6: Final answer
x = 391,436,260.51
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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.