Finding the Fourth Proportional to 1,260,107,638.80, 1,889,594,587.80 and 483,495,190.80
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Solution
The fourth proportional to 1,260,107,638.80, 1,889,594,587.80 and 483,495,190.80 is: 725,025,281.68
Step by Step Solution
- Step 1: Write the proportion equation
1,260,107,638.80 : 1,889,594,587.80 = 483,495,190.80 : x - Step 2: Convert to fraction form
1,260,107,638.80/1,889,594,587.80 = 483,495,190.80/x - Step 3: Cross multiply
1,260,107,638.80x = 1,889,594,587.80 × 483,495,190.80 - Step 4: Simplify right side
1,260,107,638.80x = 913,609,895,763,008,384 - Step 5: Solve for x
x = 913,609,895,763,008,384/1,260,107,638.80 - Step 6: Final answer
x = 725,025,281.68
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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.