Finding the Fourth Proportional to 723,706,521.44, 998,714,243.76 and 393,680,873.12
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Solution
The fourth proportional to 723,706,521.44, 998,714,243.76 and 393,680,873.12 is: 543,279,193.75
Step by Step Solution
- Step 1: Write the proportion equation
723,706,521.44 : 998,714,243.76 = 393,680,873.12 : x - Step 2: Convert to fraction form
723,706,521.44/998,714,243.76 = 393,680,873.12/x - Step 3: Cross multiply
723,706,521.44x = 998,714,243.76 × 393,680,873.12 - Step 4: Simplify right side
723,706,521.44x = 393,174,695,480,817,344 - Step 5: Solve for x
x = 393,174,695,480,817,344/723,706,521.44 - Step 6: Final answer
x = 543,279,193.75
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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.