Finding the Fourth Proportional to 642,723,730.80, 886,959,320.04 and 349,368,298.80
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Solution
The fourth proportional to 642,723,730.80, 886,959,320.04 and 349,368,298.80 is: 482,128,563.02
Step by Step Solution
- Step 1: Write the proportion equation
642,723,730.80 : 886,959,320.04 = 349,368,298.80 : x - Step 2: Convert to fraction form
642,723,730.80/886,959,320.04 = 349,368,298.80/x - Step 3: Cross multiply
642,723,730.80x = 886,959,320.04 × 349,368,298.80 - Step 4: Simplify right side
642,723,730.80x = 309,875,468,747,179,520 - Step 5: Solve for x
x = 309,875,468,747,179,520/642,723,730.80 - Step 6: Final answer
x = 482,128,563.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.