Finding the Fourth Proportional to 1,551,129.68, 2,140,688.24 and 862,931.18
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Solution
The fourth proportional to 1,551,129.68, 2,140,688.24 and 862,931.18 is: 1,190,916.95
Step by Step Solution
- Step 1: Write the proportion equation
1,551,129.68 : 2,140,688.24 = 862,931.18 : x - Step 2: Convert to fraction form
1,551,129.68/2,140,688.24 = 862,931.18/x - Step 3: Cross multiply
1,551,129.68x = 2,140,688.24 × 862,931.18 - Step 4: Simplify right side
1,551,129.68x = 1,847,266,633,228.38 - Step 5: Solve for x
x = 1,847,266,633,228.38/1,551,129.68 - Step 6: Final answer
x = 1,190,916.95
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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.