Finding the Fourth Proportional to 1,221,404.79, 1,685,547.95 and 670,116.81
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Solution
The fourth proportional to 1,221,404.79, 1,685,547.95 and 670,116.81 is: 924,766.32
Step by Step Solution
- Step 1: Write the proportion equation
1,221,404.79 : 1,685,547.95 = 670,116.81 : x - Step 2: Convert to fraction form
1,221,404.79/1,685,547.95 = 670,116.81/x - Step 3: Cross multiply
1,221,404.79x = 1,685,547.95 × 670,116.81 - Step 4: Simplify right side
1,221,404.79x = 1,129,514,012,005.46 - Step 5: Solve for x
x = 1,129,514,012,005.46/1,221,404.79 - Step 6: Final answer
x = 924,766.32
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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.