Finding the Fourth Proportional to 442,896,398.40, 664,344,597.60 and 420,725,467.20
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Solution
The fourth proportional to 442,896,398.40, 664,344,597.60 and 420,725,467.20 is: 631,088,200.80
Step by Step Solution
- Step 1: Write the proportion equation
442,896,398.40 : 664,344,597.60 = 420,725,467.20 : x - Step 2: Convert to fraction form
442,896,398.40/664,344,597.60 = 420,725,467.20/x - Step 3: Cross multiply
442,896,398.40x = 664,344,597.60 × 420,725,467.20 - Step 4: Simplify right side
442,896,398.40x = 279,506,691,207,056,000 - Step 5: Solve for x
x = 279,506,691,207,056,000/442,896,398.40 - Step 6: Final answer
x = 631,088,200.80
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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.