Finding the Fourth Proportional to 858,872,266.20, 1,288,686,312.90 and 398,573,501.40
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Solution
The fourth proportional to 858,872,266.20, 1,288,686,312.90 and 398,573,501.40 is: 598,035,628.99
Step by Step Solution
- Step 1: Write the proportion equation
858,872,266.20 : 1,288,686,312.90 = 398,573,501.40 : x - Step 2: Convert to fraction form
858,872,266.20/1,288,686,312.90 = 398,573,501.40/x - Step 3: Cross multiply
858,872,266.20x = 1,288,686,312.90 × 398,573,501.40 - Step 4: Simplify right side
858,872,266.20x = 513,636,215,938,809,024 - Step 5: Solve for x
x = 513,636,215,938,809,024/858,872,266.20 - Step 6: Final answer
x = 598,035,628.99
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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.