Finding the Fourth Proportional to 639,953.64, 883,129.96 and 349,565.07
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Solution
The fourth proportional to 639,953.64, 883,129.96 and 349,565.07 is: 482,396.49
Step by Step Solution
- Step 1: Write the proportion equation
639,953.64 : 883,129.96 = 349,565.07 : x - Step 2: Convert to fraction form
639,953.64/883,129.96 = 349,565.07/x - Step 3: Cross multiply
639,953.64x = 883,129.96 × 349,565.07 - Step 4: Simplify right side
639,953.64x = 308,711,386,050.74 - Step 5: Solve for x
x = 308,711,386,050.74/639,953.64 - Step 6: Final answer
x = 482,396.49
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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.