Finding the Fourth Proportional to 1,288,364,573.88, 1,932,402,138.36 and 355,819,995.36
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Solution
The fourth proportional to 1,288,364,573.88, 1,932,402,138.36 and 355,819,995.36 is: 533,690,023.65
Step by Step Solution
- Step 1: Write the proportion equation
1,288,364,573.88 : 1,932,402,138.36 = 355,819,995.36 : x - Step 2: Convert to fraction form
1,288,364,573.88/1,932,402,138.36 = 355,819,995.36/x - Step 3: Cross multiply
1,288,364,573.88x = 1,932,402,138.36 × 355,819,995.36 - Step 4: Simplify right side
1,288,364,573.88x = 687,587,319,904,909,312 - Step 5: Solve for x
x = 687,587,319,904,909,312/1,288,364,573.88 - Step 6: Final answer
x = 533,690,023.65
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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.