Finding the Fourth Proportional to 875,179,929.64, 1,207,734,109.50 and 478,699,450.92
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Solution
The fourth proportional to 875,179,929.64, 1,207,734,109.50 and 478,699,450.92 is: 660,597,478.87
Step by Step Solution
- Step 1: Write the proportion equation
875,179,929.64 : 1,207,734,109.50 = 478,699,450.92 : x - Step 2: Convert to fraction form
875,179,929.64/1,207,734,109.50 = 478,699,450.92/x - Step 3: Cross multiply
875,179,929.64x = 1,207,734,109.50 × 478,699,450.92 - Step 4: Simplify right side
875,179,929.64x = 578,141,655,075,005,184 - Step 5: Solve for x
x = 578,141,655,075,005,184/875,179,929.64 - Step 6: Final answer
x = 660,597,478.87
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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.