Finding the Fourth Proportional to 1,313,781.68, 1,970,967.36 and 415,275.68
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Solution
The fourth proportional to 1,313,781.68, 1,970,967.36 and 415,275.68 is: 623,006.72
Step by Step Solution
- Step 1: Write the proportion equation
1,313,781.68 : 1,970,967.36 = 415,275.68 : x - Step 2: Convert to fraction form
1,313,781.68/1,970,967.36 = 415,275.68/x - Step 3: Cross multiply
1,313,781.68x = 1,970,967.36 × 415,275.68 - Step 4: Simplify right side
1,313,781.68x = 818,494,810,681.81 - Step 5: Solve for x
x = 818,494,810,681.81/1,313,781.68 - Step 6: Final answer
x = 623,006.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.