Finding the Fourth Proportional to 861,795,502.79, 1,292,874,830.01 and 279,484,343.06
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Solution
The fourth proportional to 861,795,502.79, 1,292,874,830.01 and 279,484,343.06 is: 419,285,400.48
Step by Step Solution
- Step 1: Write the proportion equation
861,795,502.79 : 1,292,874,830.01 = 279,484,343.06 : x - Step 2: Convert to fraction form
861,795,502.79/1,292,874,830.01 = 279,484,343.06/x - Step 3: Cross multiply
861,795,502.79x = 1,292,874,830.01 × 279,484,343.06 - Step 4: Simplify right side
861,795,502.79x = 361,338,272,517,689,664 - Step 5: Solve for x
x = 361,338,272,517,689,664/861,795,502.79 - Step 6: Final answer
x = 419,285,400.48
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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.