Finding the Fourth Proportional to 427,565,518.90, 641,348,278.35 and 366,343,515.70
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Solution
The fourth proportional to 427,565,518.90, 641,348,278.35 and 366,343,515.70 is: 549,515,273.55
Step by Step Solution
- Step 1: Write the proportion equation
427,565,518.90 : 641,348,278.35 = 366,343,515.70 : x - Step 2: Convert to fraction form
427,565,518.90/641,348,278.35 = 366,343,515.70/x - Step 3: Cross multiply
427,565,518.90x = 641,348,278.35 × 366,343,515.70 - Step 4: Simplify right side
427,565,518.90x = 234,953,783,078,881,184 - Step 5: Solve for x
x = 234,953,783,078,881,184/427,565,518.90 - Step 6: Final answer
x = 549,515,273.55
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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.