Finding the Fourth Proportional to 1,948,619.28, 2,688,985.98 and 1,077,403.53
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Solution
The fourth proportional to 1,948,619.28, 2,688,985.98 and 1,077,403.53 is: 1,486,756.81
Step by Step Solution
- Step 1: Write the proportion equation
1,948,619.28 : 2,688,985.98 = 1,077,403.53 : x - Step 2: Convert to fraction form
1,948,619.28/2,688,985.98 = 1,077,403.53/x - Step 3: Cross multiply
1,948,619.28x = 2,688,985.98 × 1,077,403.53 - Step 4: Simplify right side
1,948,619.28x = 2,897,122,986,972.51 - Step 5: Solve for x
x = 2,897,122,986,972.51/1,948,619.28 - Step 6: Final answer
x = 1,486,756.81
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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.