Finding the Fourth Proportional to 1,680,236,586.40, 2,516,323,801.20 and 817,585,808.80
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Solution
The fourth proportional to 1,680,236,586.40, 2,516,323,801.20 and 817,585,808.80 is: 1,224,417,231.99
Step by Step Solution
- Step 1: Write the proportion equation
1,680,236,586.40 : 2,516,323,801.20 = 817,585,808.80 : x - Step 2: Convert to fraction form
1,680,236,586.40/2,516,323,801.20 = 817,585,808.80/x - Step 3: Cross multiply
1,680,236,586.40x = 2,516,323,801.20 × 817,585,808.80 - Step 4: Simplify right side
1,680,236,586.40x = 2,057,310,630,206,792,192 - Step 5: Solve for x
x = 2,057,310,630,206,792,192/1,680,236,586.40 - Step 6: Final answer
x = 1,224,417,231.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.