Finding the Fourth Proportional to 420,060,533.48, 579,692,815.68 and 231,888,381.68
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Solution
The fourth proportional to 420,060,533.48, 579,692,815.68 and 231,888,381.68 is: 320,011,089.32
Step by Step Solution
- Step 1: Write the proportion equation
420,060,533.48 : 579,692,815.68 = 231,888,381.68 : x - Step 2: Convert to fraction form
420,060,533.48/579,692,815.68 = 231,888,381.68/x - Step 3: Cross multiply
420,060,533.48x = 579,692,815.68 × 231,888,381.68 - Step 4: Simplify right side
420,060,533.48x = 134,424,028,899,557,728 - Step 5: Solve for x
x = 134,424,028,899,557,728/420,060,533.48 - Step 6: Final answer
x = 320,011,089.32
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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.