Finding the Fourth Proportional to 479,393,285.99, 661,374,503.18 and 278,415,948.11
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Solution
The fourth proportional to 479,393,285.99, 661,374,503.18 and 278,415,948.11 is: 384,104,689.70
Step by Step Solution
- Step 1: Write the proportion equation
479,393,285.99 : 661,374,503.18 = 278,415,948.11 : x - Step 2: Convert to fraction form
479,393,285.99/661,374,503.18 = 278,415,948.11/x - Step 3: Cross multiply
479,393,285.99x = 661,374,503.18 × 278,415,948.11 - Step 4: Simplify right side
479,393,285.99x = 184,137,209,358,639,904 - Step 5: Solve for x
x = 184,137,209,358,639,904/479,393,285.99 - Step 6: Final answer
x = 384,104,689.70
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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.