Finding the Fourth Proportional to 1,316,397.21, 1,974,370.02 and 417,638.62
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Solution
The fourth proportional to 1,316,397.21, 1,974,370.02 and 417,638.62 is: 626,386.29
Step by Step Solution
- Step 1: Write the proportion equation
1,316,397.21 : 1,974,370.02 = 417,638.62 : x - Step 2: Convert to fraction form
1,316,397.21/1,974,370.02 = 417,638.62/x - Step 3: Cross multiply
1,316,397.21x = 1,974,370.02 × 417,638.62 - Step 4: Simplify right side
1,316,397.21x = 824,573,170,522.17 - Step 5: Solve for x
x = 824,573,170,522.17/1,316,397.21 - Step 6: Final answer
x = 626,386.29
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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.