Finding the Fourth Proportional to 532,235,261.20, 798,352,891.80 and 388,908,029.20
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Solution
The fourth proportional to 532,235,261.20, 798,352,891.80 and 388,908,029.20 is: 583,362,043.80
Step by Step Solution
- Step 1: Write the proportion equation
532,235,261.20 : 798,352,891.80 = 388,908,029.20 : x - Step 2: Convert to fraction form
532,235,261.20/798,352,891.80 = 388,908,029.20/x - Step 3: Cross multiply
532,235,261.20x = 798,352,891.80 × 388,908,029.20 - Step 4: Simplify right side
532,235,261.20x = 310,485,849,756,058,816 - Step 5: Solve for x
x = 310,485,849,756,058,816/532,235,261.20 - Step 6: Final answer
x = 583,362,043.80
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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.