Finding the Fourth Proportional to 1,543,693,570.74, 2,130,295,506.93 and 838,843,875.36
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Solution
The fourth proportional to 1,543,693,570.74, 2,130,295,506.93 and 838,843,875.36 is: 1,157,603,667.31
Step by Step Solution
- Step 1: Write the proportion equation
1,543,693,570.74 : 2,130,295,506.93 = 838,843,875.36 : x - Step 2: Convert to fraction form
1,543,693,570.74/2,130,295,506.93 = 838,843,875.36/x - Step 3: Cross multiply
1,543,693,570.74x = 2,130,295,506.93 × 838,843,875.36 - Step 4: Simplify right side
1,543,693,570.74x = 1,786,985,338,695,156,992 - Step 5: Solve for x
x = 1,786,985,338,695,156,992/1,543,693,570.74 - Step 6: Final answer
x = 1,157,603,667.31
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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.