Finding the Fourth Proportional to 1,239,010.61, 1,710,320.81 and 878,319.63
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Solution
The fourth proportional to 1,239,010.61, 1,710,320.81 and 878,319.63 is: 1,212,425.73
Step by Step Solution
- Step 1: Write the proportion equation
1,239,010.61 : 1,710,320.81 = 878,319.63 : x - Step 2: Convert to fraction form
1,239,010.61/1,710,320.81 = 878,319.63/x - Step 3: Cross multiply
1,239,010.61x = 1,710,320.81 × 878,319.63 - Step 4: Simplify right side
1,239,010.61x = 1,502,208,336,628.90 - Step 5: Solve for x
x = 1,502,208,336,628.90/1,239,010.61 - Step 6: Final answer
x = 1,212,425.73
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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.