Finding the Fourth Proportional to 1,947,980,489.96, 2,921,929,797.37 and 474,128,521.65
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Solution
The fourth proportional to 1,947,980,489.96, 2,921,929,797.37 and 474,128,521.65 is: 711,182,818.47
Step by Step Solution
- Step 1: Write the proportion equation
1,947,980,489.96 : 2,921,929,797.37 = 474,128,521.65 : x - Step 2: Convert to fraction form
1,947,980,489.96/2,921,929,797.37 = 474,128,521.65/x - Step 3: Cross multiply
1,947,980,489.96x = 2,921,929,797.37 × 474,128,521.65 - Step 4: Simplify right side
1,947,980,489.96x = 1,385,370,255,175,141,632 - Step 5: Solve for x
x = 1,385,370,255,175,141,632/1,947,980,489.96 - Step 6: Final answer
x = 711,182,818.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.