Finding the Fourth Proportional to 539,139.80, 808,709.70 and 381,675.80
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Solution
The fourth proportional to 539,139.80, 808,709.70 and 381,675.80 is: 572,513.70
Step by Step Solution
- Step 1: Write the proportion equation
539,139.80 : 808,709.70 = 381,675.80 : x - Step 2: Convert to fraction form
539,139.80/808,709.70 = 381,675.80/x - Step 3: Cross multiply
539,139.80x = 808,709.70 × 381,675.80 - Step 4: Simplify right side
539,139.80x = 308,664,921,715.26 - Step 5: Solve for x
x = 308,664,921,715.26/539,139.80 - Step 6: Final answer
x = 572,513.70
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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.