Finding the Fourth Proportional to 2,128,354.55, 2,937,191.18 and 1,161,547.05
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Solution
The fourth proportional to 2,128,354.55, 2,937,191.18 and 1,161,547.05 is: 1,602,968.71
Step by Step Solution
- Step 1: Write the proportion equation
2,128,354.55 : 2,937,191.18 = 1,161,547.05 : x - Step 2: Convert to fraction form
2,128,354.55/2,937,191.18 = 1,161,547.05/x - Step 3: Cross multiply
2,128,354.55x = 2,937,191.18 × 1,161,547.05 - Step 4: Simplify right side
2,128,354.55x = 3,411,685,744,607.28 - Step 5: Solve for x
x = 3,411,685,744,607.28/2,128,354.55 - Step 6: Final answer
x = 1,602,968.71
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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.