Finding the Fourth Proportional to 1,579,218,390.82, 2,179,389,495.45 and 874,370,387.62
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Solution
The fourth proportional to 1,579,218,390.82, 2,179,389,495.45 and 874,370,387.62 is: 1,206,668,848.96
Step by Step Solution
- Step 1: Write the proportion equation
1,579,218,390.82 : 2,179,389,495.45 = 874,370,387.62 : x - Step 2: Convert to fraction form
1,579,218,390.82/2,179,389,495.45 = 874,370,387.62/x - Step 3: Cross multiply
1,579,218,390.82x = 2,179,389,495.45 × 874,370,387.62 - Step 4: Simplify right side
1,579,218,390.82x = 1,905,593,637,911,572,480 - Step 5: Solve for x
x = 1,905,593,637,911,572,480/1,579,218,390.82 - Step 6: Final answer
x = 1,206,668,848.96
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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.