Finding the Fourth Proportional to 695,473,901.80, 1,043,210,852.70 and 685,270,234.60
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Solution
The fourth proportional to 695,473,901.80, 1,043,210,852.70 and 685,270,234.60 is: 1,027,905,351.90
Step by Step Solution
- Step 1: Write the proportion equation
695,473,901.80 : 1,043,210,852.70 = 685,270,234.60 : x - Step 2: Convert to fraction form
695,473,901.80/1,043,210,852.70 = 685,270,234.60/x - Step 3: Cross multiply
695,473,901.80x = 1,043,210,852.70 × 685,270,234.60 - Step 4: Simplify right side
695,473,901.80x = 714,881,345,766,995,072 - Step 5: Solve for x
x = 714,881,345,766,995,072/695,473,901.80 - Step 6: Final answer
x = 1,027,905,351.90
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Double scale
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Similar ratio
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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.