Finding the Fourth Proportional to 521,211,106.88, 781,643,052.84 and 210,238,404.80
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Solution
The fourth proportional to 521,211,106.88, 781,643,052.84 and 210,238,404.80 is: 315,287,579.99
Step by Step Solution
- Step 1: Write the proportion equation
521,211,106.88 : 781,643,052.84 = 210,238,404.80 : x - Step 2: Convert to fraction form
521,211,106.88/781,643,052.84 = 210,238,404.80/x - Step 3: Cross multiply
521,211,106.88x = 781,643,052.84 × 210,238,404.80 - Step 4: Simplify right side
521,211,106.88x = 164,331,388,552,083,712 - Step 5: Solve for x
x = 164,331,388,552,083,712/521,211,106.88 - Step 6: Final answer
x = 315,287,579.99
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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.