Finding the Fourth Proportional to 1,020,240,910.80, 1,530,361,366.20 and 330,217,916.40
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Solution
The fourth proportional to 1,020,240,910.80, 1,530,361,366.20 and 330,217,916.40 is: 495,326,874.60
Step by Step Solution
- Step 1: Write the proportion equation
1,020,240,910.80 : 1,530,361,366.20 = 330,217,916.40 : x - Step 2: Convert to fraction form
1,020,240,910.80/1,530,361,366.20 = 330,217,916.40/x - Step 3: Cross multiply
1,020,240,910.80x = 1,530,361,366.20 × 330,217,916.40 - Step 4: Simplify right side
1,020,240,910.80x = 505,352,741,685,621,376 - Step 5: Solve for x
x = 505,352,741,685,621,376/1,020,240,910.80 - Step 6: Final answer
x = 495,326,874.60
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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.