Finding the Fourth Proportional to 1,225,181.97, 1,690,503.35 and 715,785.93
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Solution
The fourth proportional to 1,225,181.97, 1,690,503.35 and 715,785.93 is: 987,639.83
Step by Step Solution
- Step 1: Write the proportion equation
1,225,181.97 : 1,690,503.35 = 715,785.93 : x - Step 2: Convert to fraction form
1,225,181.97/1,690,503.35 = 715,785.93/x - Step 3: Cross multiply
1,225,181.97x = 1,690,503.35 × 715,785.93 - Step 4: Simplify right side
1,225,181.97x = 1,210,038,512,547.87 - Step 5: Solve for x
x = 1,210,038,512,547.87/1,225,181.97 - Step 6: Final answer
x = 987,639.83
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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.