Finding the Fourth Proportional to 1,065,863,701.80, 1,598,795,552.70 and 289,605,547.80
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Solution
The fourth proportional to 1,065,863,701.80, 1,598,795,552.70 and 289,605,547.80 is: 434,408,321.70
Step by Step Solution
- Step 1: Write the proportion equation
1,065,863,701.80 : 1,598,795,552.70 = 289,605,547.80 : x - Step 2: Convert to fraction form
1,065,863,701.80/1,598,795,552.70 = 289,605,547.80/x - Step 3: Cross multiply
1,065,863,701.80x = 1,598,795,552.70 × 289,605,547.80 - Step 4: Simplify right side
1,065,863,701.80x = 463,020,061,859,887,296 - Step 5: Solve for x
x = 463,020,061,859,887,296/1,065,863,701.80 - Step 6: Final answer
x = 434,408,321.70
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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.