Finding the Fourth Proportional to 1,069,125.51, 1,475,393.13 and 639,405.63
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Solution
The fourth proportional to 1,069,125.51, 1,475,393.13 and 639,405.63 is: 882,379.72
Step by Step Solution
- Step 1: Write the proportion equation
1,069,125.51 : 1,475,393.13 = 639,405.63 : x - Step 2: Convert to fraction form
1,069,125.51/1,475,393.13 = 639,405.63/x - Step 3: Cross multiply
1,069,125.51x = 1,475,393.13 × 639,405.63 - Step 4: Simplify right side
1,069,125.51x = 943,374,670,588.29 - Step 5: Solve for x
x = 943,374,670,588.29/1,069,125.51 - Step 6: Final answer
x = 882,379.72
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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.