Finding the Fourth Proportional to 1,207,125,782.58, 1,810,688,814.08 and 378,144,024.42
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Solution
The fourth proportional to 1,207,125,782.58, 1,810,688,814.08 and 378,144,024.42 is: 567,216,080.55
Step by Step Solution
- Step 1: Write the proportion equation
1,207,125,782.58 : 1,810,688,814.08 = 378,144,024.42 : x - Step 2: Convert to fraction form
1,207,125,782.58/1,810,688,814.08 = 378,144,024.42/x - Step 3: Cross multiply
1,207,125,782.58x = 1,810,688,814.08 × 378,144,024.42 - Step 4: Simplify right side
1,207,125,782.58x = 684,701,155,128,488,320 - Step 5: Solve for x
x = 684,701,155,128,488,320/1,207,125,782.58 - Step 6: Final answer
x = 567,216,080.55
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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.