Finding the Fourth Proportional to 1,120,316,280.77, 1,546,172,037.44 and 637,625,590.44
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Solution
The fourth proportional to 1,120,316,280.77, 1,546,172,037.44 and 637,625,590.44 is: 880,000,474.17
Step by Step Solution
- Step 1: Write the proportion equation
1,120,316,280.77 : 1,546,172,037.44 = 637,625,590.44 : x - Step 2: Convert to fraction form
1,120,316,280.77/1,546,172,037.44 = 637,625,590.44/x - Step 3: Cross multiply
1,120,316,280.77x = 1,546,172,037.44 × 637,625,590.44 - Step 4: Simplify right side
1,120,316,280.77x = 985,878,858,291,309,696 - Step 5: Solve for x
x = 985,878,858,291,309,696/1,120,316,280.77 - Step 6: Final answer
x = 880,000,474.17
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Double scale
Find fourth proportional to 1,120,316,281.77, 1,546,172,038.82 and 637,625,591.44
Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.