Finding the Fourth Proportional to 478,553,728.80, 717,830,593.20 and 409,678,975.20
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Solution
The fourth proportional to 478,553,728.80, 717,830,593.20 and 409,678,975.20 is: 614,518,462.80
Step by Step Solution
- Step 1: Write the proportion equation
478,553,728.80 : 717,830,593.20 = 409,678,975.20 : x - Step 2: Convert to fraction form
478,553,728.80/717,830,593.20 = 409,678,975.20/x - Step 3: Cross multiply
478,553,728.80x = 717,830,593.20 × 409,678,975.20 - Step 4: Simplify right side
478,553,728.80x = 294,080,101,789,384,128 - Step 5: Solve for x
x = 294,080,101,789,384,128/478,553,728.80 - Step 6: Final answer
x = 614,518,462.80
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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.