Finding the Fourth Proportional to 1,139,483.12, 1,572,423.10 and 623,135.12
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Solution
The fourth proportional to 1,139,483.12, 1,572,423.10 and 623,135.12 is: 859,891.68
Step by Step Solution
- Step 1: Write the proportion equation
1,139,483.12 : 1,572,423.10 = 623,135.12 : x - Step 2: Convert to fraction form
1,139,483.12/1,572,423.10 = 623,135.12/x - Step 3: Cross multiply
1,139,483.12x = 1,572,423.10 × 623,135.12 - Step 4: Simplify right side
1,139,483.12x = 979,832,047,689.32 - Step 5: Solve for x
x = 979,832,047,689.32/1,139,483.12 - Step 6: Final answer
x = 859,891.68
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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.