Finding the Fourth Proportional to 1,043,539,815.53, 1,440,242,361.47 and 636,406,722.70
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Solution
The fourth proportional to 1,043,539,815.53, 1,440,242,361.47 and 636,406,722.70 is: 878,337,278.09
Step by Step Solution
- Step 1: Write the proportion equation
1,043,539,815.53 : 1,440,242,361.47 = 636,406,722.70 : x - Step 2: Convert to fraction form
1,043,539,815.53/1,440,242,361.47 = 636,406,722.70/x - Step 3: Cross multiply
1,043,539,815.53x = 1,440,242,361.47 × 636,406,722.70 - Step 4: Simplify right side
1,043,539,815.53x = 916,579,921,154,821,888 - Step 5: Solve for x
x = 916,579,921,154,821,888/1,043,539,815.53 - Step 6: Final answer
x = 878,337,278.09
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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.