Finding the Fourth Proportional to 943,699,400.70, 1,302,863,810.58 and 838,988,251.80
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Solution
The fourth proportional to 943,699,400.70, 1,302,863,810.58 and 838,988,251.80 is: 1,158,300,439.70
Step by Step Solution
- Step 1: Write the proportion equation
943,699,400.70 : 1,302,863,810.58 = 838,988,251.80 : x - Step 2: Convert to fraction form
943,699,400.70/1,302,863,810.58 = 838,988,251.80/x - Step 3: Cross multiply
943,699,400.70x = 1,302,863,810.58 × 838,988,251.80 - Step 4: Simplify right side
943,699,400.70x = 1,093,087,430,772,000,384 - Step 5: Solve for x
x = 1,093,087,430,772,000,384/943,699,400.70 - Step 6: Final answer
x = 1,158,300,439.70
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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.