Finding the Fourth Proportional to 1,878,523,916.72, 2,817,320,279.18 and 634,926,771.55
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Solution
The fourth proportional to 1,878,523,916.72, 2,817,320,279.18 and 634,926,771.55 is: 952,232,789.45
Step by Step Solution
- Step 1: Write the proportion equation
1,878,523,916.72 : 2,817,320,279.18 = 634,926,771.55 : x - Step 2: Convert to fraction form
1,878,523,916.72/2,817,320,279.18 = 634,926,771.55/x - Step 3: Cross multiply
1,878,523,916.72x = 2,817,320,279.18 × 634,926,771.55 - Step 4: Simplify right side
1,878,523,916.72x = 1,788,792,069,268,015,360 - Step 5: Solve for x
x = 1,788,792,069,268,015,360/1,878,523,916.72 - Step 6: Final answer
x = 952,232,789.45
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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.