Finding the Fourth Proportional to 859,603,828.40, 1,289,678,317.32 and 306,894,405.68
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Solution
The fourth proportional to 859,603,828.40, 1,289,678,317.32 and 306,894,405.68 is: 460,438,922.72
Step by Step Solution
- Step 1: Write the proportion equation
859,603,828.40 : 1,289,678,317.32 = 306,894,405.68 : x - Step 2: Convert to fraction form
859,603,828.40/1,289,678,317.32 = 306,894,405.68/x - Step 3: Cross multiply
859,603,828.40x = 1,289,678,317.32 × 306,894,405.68 - Step 4: Simplify right side
859,603,828.40x = 395,795,060,712,303,808 - Step 5: Solve for x
x = 395,795,060,712,303,808/859,603,828.40 - Step 6: Final answer
x = 460,438,922.72
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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.