Finding the Fourth Proportional to 717,913.71, 990,727.47 and 395,635.32
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Solution
The fourth proportional to 717,913.71, 990,727.47 and 395,635.32 is: 545,980.35
Step by Step Solution
- Step 1: Write the proportion equation
717,913.71 : 990,727.47 = 395,635.32 : x - Step 2: Convert to fraction form
717,913.71/990,727.47 = 395,635.32/x - Step 3: Cross multiply
717,913.71x = 990,727.47 × 395,635.32 - Step 4: Simplify right side
717,913.71x = 391,966,779,626.24 - Step 5: Solve for x
x = 391,966,779,626.24/717,913.71 - Step 6: Final answer
x = 545,980.35
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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.