Finding the Fourth Proportional to 1,488,584,918.70, 2,232,877,378.05 and 614,895,914.70
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Solution
The fourth proportional to 1,488,584,918.70, 2,232,877,378.05 and 614,895,914.70 is: 922,343,872.05
Step by Step Solution
- Step 1: Write the proportion equation
1,488,584,918.70 : 2,232,877,378.05 = 614,895,914.70 : x - Step 2: Convert to fraction form
1,488,584,918.70/2,232,877,378.05 = 614,895,914.70/x - Step 3: Cross multiply
1,488,584,918.70x = 2,232,877,378.05 × 614,895,914.70 - Step 4: Simplify right side
1,488,584,918.70x = 1,372,987,177,788,992,768 - Step 5: Solve for x
x = 1,372,987,177,788,992,768/1,488,584,918.70 - Step 6: Final answer
x = 922,343,872.05
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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.