Finding the Fourth Proportional to 478,590,564.80, 717,885,847.20 and 409,715,811.20
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Solution
The fourth proportional to 478,590,564.80, 717,885,847.20 and 409,715,811.20 is: 614,573,716.80
Step by Step Solution
- Step 1: Write the proportion equation
478,590,564.80 : 717,885,847.20 = 409,715,811.20 : x - Step 2: Convert to fraction form
478,590,564.80/717,885,847.20 = 409,715,811.20/x - Step 3: Cross multiply
478,590,564.80x = 717,885,847.20 × 409,715,811.20 - Step 4: Simplify right side
478,590,564.80x = 294,129,182,234,547,264 - Step 5: Solve for x
x = 294,129,182,234,547,264/478,590,564.80 - Step 6: Final answer
x = 614,573,716.80
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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.