Finding the Fourth Proportional to 1,225,168,418.65, 1,690,875,356.34 and 696,611,601.45
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Solution
The fourth proportional to 1,225,168,418.65, 1,690,875,356.34 and 696,611,601.45 is: 961,405,282.66
Step by Step Solution
- Step 1: Write the proportion equation
1,225,168,418.65 : 1,690,875,356.34 = 696,611,601.45 : x - Step 2: Convert to fraction form
1,225,168,418.65/1,690,875,356.34 = 696,611,601.45/x - Step 3: Cross multiply
1,225,168,418.65x = 1,690,875,356.34 × 696,611,601.45 - Step 4: Simplify right side
1,225,168,418.65x = 1,177,883,389,832,346,880 - Step 5: Solve for x
x = 1,177,883,389,832,346,880/1,225,168,418.65 - Step 6: Final answer
x = 961,405,282.66
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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.