Finding the Fourth Proportional to 1,069,191.74, 1,475,484.09 and 639,471.86
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Solution
The fourth proportional to 1,069,191.74, 1,475,484.09 and 639,471.86 is: 882,470.86
Step by Step Solution
- Step 1: Write the proportion equation
1,069,191.74 : 1,475,484.09 = 639,471.86 : x - Step 2: Convert to fraction form
1,069,191.74/1,475,484.09 = 639,471.86/x - Step 3: Cross multiply
1,069,191.74x = 1,475,484.09 × 639,471.86 - Step 4: Simplify right side
1,069,191.74x = 943,530,555,432.71 - Step 5: Solve for x
x = 943,530,555,432.71/1,069,191.74 - Step 6: Final answer
x = 882,470.86
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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.