Finding the Fourth Proportional to 1,573,516,985.25, 2,171,396,405.99 and 868,653,796.17
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Solution
The fourth proportional to 1,573,516,985.25, 2,171,396,405.99 and 868,653,796.17 is: 1,198,710,753.51
Step by Step Solution
- Step 1: Write the proportion equation
1,573,516,985.25 : 2,171,396,405.99 = 868,653,796.17 : x - Step 2: Convert to fraction form
1,573,516,985.25/2,171,396,405.99 = 868,653,796.17/x - Step 3: Cross multiply
1,573,516,985.25x = 2,171,396,405.99 × 868,653,796.17 - Step 4: Simplify right side
1,573,516,985.25x = 1,886,191,731,058,557,952 - Step 5: Solve for x
x = 1,886,191,731,058,557,952/1,573,516,985.25 - Step 6: Final answer
x = 1,198,710,753.51
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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.