Finding the Fourth Proportional to 1,132,434,145.20, 1,698,651,217.80 and 314,554,465.20
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Solution
The fourth proportional to 1,132,434,145.20, 1,698,651,217.80 and 314,554,465.20 is: 471,831,697.80
Step by Step Solution
- Step 1: Write the proportion equation
1,132,434,145.20 : 1,698,651,217.80 = 314,554,465.20 : x - Step 2: Convert to fraction form
1,132,434,145.20/1,698,651,217.80 = 314,554,465.20/x - Step 3: Cross multiply
1,132,434,145.20x = 1,698,651,217.80 × 314,554,465.20 - Step 4: Simplify right side
1,132,434,145.20x = 534,318,325,376,407,680 - Step 5: Solve for x
x = 534,318,325,376,407,680/1,132,434,145.20 - Step 6: Final answer
x = 471,831,697.80
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Half scale
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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.