Finding the Fourth Proportional to 408,475,305.91, 563,618,827.78 and 243,478,228.15
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Solution
The fourth proportional to 408,475,305.91, 563,618,827.78 and 243,478,228.15 is: 335,954,001.52
Step by Step Solution
- Step 1: Write the proportion equation
408,475,305.91 : 563,618,827.78 = 243,478,228.15 : x - Step 2: Convert to fraction form
408,475,305.91/563,618,827.78 = 243,478,228.15/x - Step 3: Cross multiply
408,475,305.91x = 563,618,827.78 × 243,478,228.15 - Step 4: Simplify right side
408,475,305.91x = 137,228,913,541,325,872 - Step 5: Solve for x
x = 137,228,913,541,325,872/408,475,305.91 - Step 6: Final answer
x = 335,954,001.52
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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.