Finding the Fourth Proportional to 472,392,901.80, 708,589,352.70 and 442,159,813.80
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Solution
The fourth proportional to 472,392,901.80, 708,589,352.70 and 442,159,813.80 is: 663,239,720.70
Step by Step Solution
- Step 1: Write the proportion equation
472,392,901.80 : 708,589,352.70 = 442,159,813.80 : x - Step 2: Convert to fraction form
472,392,901.80/708,589,352.70 = 442,159,813.80/x - Step 3: Cross multiply
472,392,901.80x = 708,589,352.70 × 442,159,813.80 - Step 4: Simplify right side
472,392,901.80x = 313,309,736,250,494,528 - Step 5: Solve for x
x = 313,309,736,250,494,528/472,392,901.80 - Step 6: Final answer
x = 663,239,720.70
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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.