Finding the Fourth Proportional to 1,386,347.12, 2,079,718.80 and 426,883.76
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Solution
The fourth proportional to 1,386,347.12, 2,079,718.80 and 426,883.76 is: 640,386.65
Step by Step Solution
- Step 1: Write the proportion equation
1,386,347.12 : 2,079,718.80 = 426,883.76 : x - Step 2: Convert to fraction form
1,386,347.12/2,079,718.80 = 426,883.76/x - Step 3: Cross multiply
1,386,347.12x = 2,079,718.80 × 426,883.76 - Step 4: Simplify right side
1,386,347.12x = 887,798,181,086.69 - Step 5: Solve for x
x = 887,798,181,086.69/1,386,347.12 - Step 6: Final answer
x = 640,386.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.