Finding the Fourth Proportional to 1,298,414.36, 1,791,904.59 and 717,624.99
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Solution
The fourth proportional to 1,298,414.36, 1,791,904.59 and 717,624.99 is: 990,373.76
Step by Step Solution
- Step 1: Write the proportion equation
1,298,414.36 : 1,791,904.59 = 717,624.99 : x - Step 2: Convert to fraction form
1,298,414.36/1,791,904.59 = 717,624.99/x - Step 3: Cross multiply
1,298,414.36x = 1,791,904.59 × 717,624.99 - Step 4: Simplify right side
1,298,414.36x = 1,285,915,513,479.70 - Step 5: Solve for x
x = 1,285,915,513,479.70/1,298,414.36 - Step 6: Final answer
x = 990,373.76
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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.