Finding the Fourth Proportional to 431,682,776.70, 647,524,165.05 and 402,772,386.30
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Solution
The fourth proportional to 431,682,776.70, 647,524,165.05 and 402,772,386.30 is: 604,158,579.45
Step by Step Solution
- Step 1: Write the proportion equation
431,682,776.70 : 647,524,165.05 = 402,772,386.30 : x - Step 2: Convert to fraction form
431,682,776.70/647,524,165.05 = 402,772,386.30/x - Step 3: Cross multiply
431,682,776.70x = 647,524,165.05 × 402,772,386.30 - Step 4: Simplify right side
431,682,776.70x = 260,804,853,144,103,552 - Step 5: Solve for x
x = 260,804,853,144,103,552/431,682,776.70 - Step 6: Final answer
x = 604,158,579.45
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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.