Finding the Fourth Proportional to 1,687,406.72, 2,328,261.18 and 999,294.71
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Solution
The fourth proportional to 1,687,406.72, 2,328,261.18 and 999,294.71 is: 1,378,813.45
Step by Step Solution
- Step 1: Write the proportion equation
1,687,406.72 : 2,328,261.18 = 999,294.71 : x - Step 2: Convert to fraction form
1,687,406.72/2,328,261.18 = 999,294.71/x - Step 3: Cross multiply
1,687,406.72x = 2,328,261.18 × 999,294.71 - Step 4: Simplify right side
1,687,406.72x = 2,326,619,080,672.36 - Step 5: Solve for x
x = 2,326,619,080,672.36/1,687,406.72 - Step 6: Final answer
x = 1,378,813.45
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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.