Finding the Fourth Proportional to 430,849,939.10, 645,346,633.76 and 291,913,251.75
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Solution
The fourth proportional to 430,849,939.10, 645,346,633.76 and 291,913,251.75 is: 437,240,944.63
Step by Step Solution
- Step 1: Write the proportion equation
430,849,939.10 : 645,346,633.76 = 291,913,251.75 : x - Step 2: Convert to fraction form
430,849,939.10/645,346,633.76 = 291,913,251.75/x - Step 3: Cross multiply
430,849,939.10x = 645,346,633.76 × 291,913,251.75 - Step 4: Simplify right side
430,849,939.10x = 188,385,234,365,338,368 - Step 5: Solve for x
x = 188,385,234,365,338,368/430,849,939.10 - Step 6: Final answer
x = 437,240,944.63
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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.