Finding the Fourth Proportional to 911,351,600.12, 1,257,671,246.64 and 493,663,885.28
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Solution
The fourth proportional to 911,351,600.12, 1,257,671,246.64 and 493,663,885.28 is: 681,259,432.63
Step by Step Solution
- Step 1: Write the proportion equation
911,351,600.12 : 1,257,671,246.64 = 493,663,885.28 : x - Step 2: Convert to fraction form
911,351,600.12/1,257,671,246.64 = 493,663,885.28/x - Step 3: Cross multiply
911,351,600.12x = 1,257,671,246.64 × 493,663,885.28 - Step 4: Simplify right side
911,351,600.12x = 620,866,874,021,243,520 - Step 5: Solve for x
x = 620,866,874,021,243,520/911,351,600.12 - Step 6: Final answer
x = 681,259,432.63
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1.5x scale
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.