Finding the Fourth Proportional to 689,710.08, 951,790.56 and 387,904.08
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Solution
The fourth proportional to 689,710.08, 951,790.56 and 387,904.08 is: 535,302.37
Step by Step Solution
- Step 1: Write the proportion equation
689,710.08 : 951,790.56 = 387,904.08 : x - Step 2: Convert to fraction form
689,710.08/951,790.56 = 387,904.08/x - Step 3: Cross multiply
689,710.08x = 951,790.56 × 387,904.08 - Step 4: Simplify right side
689,710.08x = 369,203,441,529.49 - Step 5: Solve for x
x = 369,203,441,529.49/689,710.08 - Step 6: Final answer
x = 535,302.37
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1.5x scale
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.