Finding the Fourth Proportional to 726,750,031.80, 1,090,125,047.70 and 420,640,015.80
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Solution
The fourth proportional to 726,750,031.80, 1,090,125,047.70 and 420,640,015.80 is: 630,960,023.70
Step by Step Solution
- Step 1: Write the proportion equation
726,750,031.80 : 1,090,125,047.70 = 420,640,015.80 : x - Step 2: Convert to fraction form
726,750,031.80/1,090,125,047.70 = 420,640,015.80/x - Step 3: Cross multiply
726,750,031.80x = 1,090,125,047.70 × 420,640,015.80 - Step 4: Simplify right side
726,750,031.80x = 458,550,217,288,503,808 - Step 5: Solve for x
x = 458,550,217,288,503,808/726,750,031.80 - Step 6: Final answer
x = 630,960,023.70
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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.