Finding the Fourth Proportional to 717,873.12, 990,671.55 and 395,594.75
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Solution
The fourth proportional to 717,873.12, 990,671.55 and 395,594.75 is: 545,924.42
Step by Step Solution
- Step 1: Write the proportion equation
717,873.12 : 990,671.55 = 395,594.75 : x - Step 2: Convert to fraction form
717,873.12/990,671.55 = 395,594.75/x - Step 3: Cross multiply
717,873.12x = 990,671.55 × 395,594.75 - Step 4: Simplify right side
717,873.12x = 391,904,464,154.36 - Step 5: Solve for x
x = 391,904,464,154.36/717,873.12 - Step 6: Final answer
x = 545,924.42
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1.5x scale
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.