Finding the Fourth Proportional to 1,033,146,831.60, 1,549,720,247.40 and 420,170,972.40
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Solution
The fourth proportional to 1,033,146,831.60, 1,549,720,247.40 and 420,170,972.40 is: 630,256,458.60
Step by Step Solution
- Step 1: Write the proportion equation
1,033,146,831.60 : 1,549,720,247.40 = 420,170,972.40 : x - Step 2: Convert to fraction form
1,033,146,831.60/1,549,720,247.40 = 420,170,972.40/x - Step 3: Cross multiply
1,033,146,831.60x = 1,549,720,247.40 × 420,170,972.40 - Step 4: Simplify right side
1,033,146,831.60x = 651,147,463,298,026,624 - Step 5: Solve for x
x = 651,147,463,298,026,624/1,033,146,831.60 - Step 6: Final answer
x = 630,256,458.60
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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.