Finding the Fourth Proportional to 1,069,672.50, 1,476,148.05 and 639,970.74
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Solution
The fourth proportional to 1,069,672.50, 1,476,148.05 and 639,970.74 is: 883,159.62
Step by Step Solution
- Step 1: Write the proportion equation
1,069,672.50 : 1,476,148.05 = 639,970.74 : x - Step 2: Convert to fraction form
1,069,672.50/1,476,148.05 = 639,970.74/x - Step 3: Cross multiply
1,069,672.50x = 1,476,148.05 × 639,970.74 - Step 4: Simplify right side
1,069,672.50x = 944,691,559,908.06 - Step 5: Solve for x
x = 944,691,559,908.06/1,069,672.50 - Step 6: Final answer
x = 883,159.62
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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.