Finding the Fourth Proportional to 478,553,659.80, 717,830,489.70 and 409,678,906.20
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Solution
The fourth proportional to 478,553,659.80, 717,830,489.70 and 409,678,906.20 is: 614,518,359.30
Step by Step Solution
- Step 1: Write the proportion equation
478,553,659.80 : 717,830,489.70 = 409,678,906.20 : x - Step 2: Convert to fraction form
478,553,659.80/717,830,489.70 = 409,678,906.20/x - Step 3: Cross multiply
478,553,659.80x = 717,830,489.70 × 409,678,906.20 - Step 4: Simplify right side
478,553,659.80x = 294,080,009,857,306,368 - Step 5: Solve for x
x = 294,080,009,857,306,368/478,553,659.80 - Step 6: Final answer
x = 614,518,359.30
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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.