Finding the Fourth Proportional to 428,725,491.68, 642,829,319.94 and 192,331,726.94
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Solution
The fourth proportional to 428,725,491.68, 642,829,319.94 and 192,331,726.94 is: 288,381,436.68
Step by Step Solution
- Step 1: Write the proportion equation
428,725,491.68 : 642,829,319.94 = 192,331,726.94 : x - Step 2: Convert to fraction form
428,725,491.68/642,829,319.94 = 192,331,726.94/x - Step 3: Cross multiply
428,725,491.68x = 642,829,319.94 × 192,331,726.94 - Step 4: Simplify right side
428,725,491.68x = 123,636,473,231,725,984 - Step 5: Solve for x
x = 123,636,473,231,725,984/428,725,491.68 - Step 6: Final answer
x = 288,381,436.68
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.