Finding the Fourth Proportional to 742,518.88, 1,024,676.80 and 402,987.28
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Solution
The fourth proportional to 742,518.88, 1,024,676.80 and 402,987.28 is: 556,122.85
Step by Step Solution
- Step 1: Write the proportion equation
742,518.88 : 1,024,676.80 = 402,987.28 : x - Step 2: Convert to fraction form
742,518.88/1,024,676.80 = 402,987.28/x - Step 3: Cross multiply
742,518.88x = 1,024,676.80 × 402,987.28 - Step 4: Simplify right side
742,518.88x = 412,931,716,511.10 - Step 5: Solve for x
x = 412,931,716,511.10/742,518.88 - Step 6: Final answer
x = 556,122.85
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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.