Finding the Fourth Proportional to 1,111,543.06, 1,534,278.21 and 709,134.74
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Solution
The fourth proportional to 1,111,543.06, 1,534,278.21 and 709,134.74 is: 978,828.46
Step by Step Solution
- Step 1: Write the proportion equation
1,111,543.06 : 1,534,278.21 = 709,134.74 : x - Step 2: Convert to fraction form
1,111,543.06/1,534,278.21 = 709,134.74/x - Step 3: Cross multiply
1,111,543.06x = 1,534,278.21 × 709,134.74 - Step 4: Simplify right side
1,111,543.06x = 1,088,009,979,536.02 - Step 5: Solve for x
x = 1,088,009,979,536.02/1,111,543.06 - Step 6: Final answer
x = 978,828.46
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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.