Finding the Fourth Proportional to 1,129,768,400.90, 1,694,652,601.35 and 402,494,672.90
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Solution
The fourth proportional to 1,129,768,400.90, 1,694,652,601.35 and 402,494,672.90 is: 603,742,009.35
Step by Step Solution
- Step 1: Write the proportion equation
1,129,768,400.90 : 1,694,652,601.35 = 402,494,672.90 : x - Step 2: Convert to fraction form
1,129,768,400.90/1,694,652,601.35 = 402,494,672.90/x - Step 3: Cross multiply
1,129,768,400.90x = 1,694,652,601.35 × 402,494,672.90 - Step 4: Simplify right side
1,129,768,400.90x = 682,088,644,459,502,208 - Step 5: Solve for x
x = 682,088,644,459,502,208/1,129,768,400.90 - Step 6: Final answer
x = 603,742,009.35
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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.