Finding the Fourth Proportional to 391,226,617.20, 586,839,925.80 and 209,828,089.20
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Solution
The fourth proportional to 391,226,617.20, 586,839,925.80 and 209,828,089.20 is: 314,742,133.80
Step by Step Solution
- Step 1: Write the proportion equation
391,226,617.20 : 586,839,925.80 = 209,828,089.20 : x - Step 2: Convert to fraction form
391,226,617.20/586,839,925.80 = 209,828,089.20/x - Step 3: Cross multiply
391,226,617.20x = 586,839,925.80 × 209,828,089.20 - Step 4: Simplify right side
391,226,617.20x = 123,135,500,296,883,760 - Step 5: Solve for x
x = 123,135,500,296,883,760/391,226,617.20 - Step 6: Final answer
x = 314,742,133.80
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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.