Finding the Fourth Proportional to 992,412,415.40, 1,488,618,623.10 and 977,106,914.60
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Solution
The fourth proportional to 992,412,415.40, 1,488,618,623.10 and 977,106,914.60 is: 1,465,660,371.90
Step by Step Solution
- Step 1: Write the proportion equation
992,412,415.40 : 1,488,618,623.10 = 977,106,914.60 : x - Step 2: Convert to fraction form
992,412,415.40/1,488,618,623.10 = 977,106,914.60/x - Step 3: Cross multiply
992,412,415.40x = 1,488,618,623.10 × 977,106,914.60 - Step 4: Simplify right side
992,412,415.40x = 1,454,539,549,833,341,184 - Step 5: Solve for x
x = 1,454,539,549,833,341,184/992,412,415.40 - Step 6: Final answer
x = 1,465,660,371.90
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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.