Finding the Fourth Proportional to 408,475,312.66, 563,618,837.08 and 243,478,234.90
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Solution
The fourth proportional to 408,475,312.66, 563,618,837.08 and 243,478,234.90 is: 335,954,010.82
Step by Step Solution
- Step 1: Write the proportion equation
408,475,312.66 : 563,618,837.08 = 243,478,234.90 : x - Step 2: Convert to fraction form
408,475,312.66/563,618,837.08 = 243,478,234.90/x - Step 3: Cross multiply
408,475,312.66x = 563,618,837.08 × 243,478,234.90 - Step 4: Simplify right side
408,475,312.66x = 137,228,919,609,637,936 - Step 5: Solve for x
x = 137,228,919,609,637,936/408,475,312.66 - Step 6: Final answer
x = 335,954,010.82
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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.