Finding the Fourth Proportional to 717,898.60, 990,706.62 and 395,620.26
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Solution
The fourth proportional to 717,898.60, 990,706.62 and 395,620.26 is: 545,959.57
Step by Step Solution
- Step 1: Write the proportion equation
717,898.60 : 990,706.62 = 395,620.26 : x - Step 2: Convert to fraction form
717,898.60/990,706.62 = 395,620.26/x - Step 3: Cross multiply
717,898.60x = 990,706.62 × 395,620.26 - Step 4: Simplify right side
717,898.60x = 391,943,610,588.12 - Step 5: Solve for x
x = 391,943,610,588.12/717,898.60 - Step 6: Final answer
x = 545,959.57
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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.