Finding the Fourth Proportional to 909,792,431.20, 1,364,688,646.80 and 728,393,903.20
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Solution
The fourth proportional to 909,792,431.20, 1,364,688,646.80 and 728,393,903.20 is: 1,092,590,854.80
Step by Step Solution
- Step 1: Write the proportion equation
909,792,431.20 : 1,364,688,646.80 = 728,393,903.20 : x - Step 2: Convert to fraction form
909,792,431.20/1,364,688,646.80 = 728,393,903.20/x - Step 3: Cross multiply
909,792,431.20x = 1,364,688,646.80 × 728,393,903.20 - Step 4: Simplify right side
909,792,431.20x = 994,030,890,095,378,176 - Step 5: Solve for x
x = 994,030,890,095,378,176/909,792,431.20 - Step 6: Final answer
x = 1,092,590,854.80
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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.