Finding the Fourth Proportional to 629,745,578.18, 869,363,526.84 and 391,667,501.96
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Solution
The fourth proportional to 629,745,578.18, 869,363,526.84 and 391,667,501.96 is: 540,696,834.80
Step by Step Solution
- Step 1: Write the proportion equation
629,745,578.18 : 869,363,526.84 = 391,667,501.96 : x - Step 2: Convert to fraction form
629,745,578.18/869,363,526.84 = 391,667,501.96/x - Step 3: Cross multiply
629,745,578.18x = 869,363,526.84 × 391,667,501.96 - Step 4: Simplify right side
629,745,578.18x = 340,501,440,852,558,208 - Step 5: Solve for x
x = 340,501,440,852,558,208/629,745,578.18 - Step 6: Final answer
x = 540,696,834.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.