Finding the Fourth Proportional to 1,121,454.63, 1,547,642.42 and 638,089.35
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Solution
The fourth proportional to 1,121,454.63, 1,547,642.42 and 638,089.35 is: 880,583.23
Step by Step Solution
- Step 1: Write the proportion equation
1,121,454.63 : 1,547,642.42 = 638,089.35 : x - Step 2: Convert to fraction form
1,121,454.63/1,547,642.42 = 638,089.35/x - Step 3: Cross multiply
1,121,454.63x = 1,547,642.42 × 638,089.35 - Step 4: Simplify right side
1,121,454.63x = 987,534,142,619.78 - Step 5: Solve for x
x = 987,534,142,619.78/1,121,454.63 - Step 6: Final answer
x = 880,583.23
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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.