Finding the Fourth Proportional to 913,515,453.28, 1,260,435,235.19 and 517,038,442.82
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Solution
The fourth proportional to 913,515,453.28, 1,260,435,235.19 and 517,038,442.82 is: 713,390,746.64
Step by Step Solution
- Step 1: Write the proportion equation
913,515,453.28 : 1,260,435,235.19 = 517,038,442.82 : x - Step 2: Convert to fraction form
913,515,453.28/1,260,435,235.19 = 517,038,442.82/x - Step 3: Cross multiply
913,515,453.28x = 1,260,435,235.19 × 517,038,442.82 - Step 4: Simplify right side
913,515,453.28x = 651,693,471,282,541,824 - Step 5: Solve for x
x = 651,693,471,282,541,824/913,515,453.28 - Step 6: Final answer
x = 713,390,746.64
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Double scale
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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.