Finding the Fourth Proportional to 427,317.99, 640,681.73 and 187,316.61
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Solution
The fourth proportional to 427,317.99, 640,681.73 and 187,316.61 is: 280,845.49
Step by Step Solution
- Step 1: Write the proportion equation
427,317.99 : 640,681.73 = 187,316.61 : x - Step 2: Convert to fraction form
427,317.99/640,681.73 = 187,316.61/x - Step 3: Cross multiply
427,317.99x = 640,681.73 × 187,316.61 - Step 4: Simplify right side
427,317.99x = 120,010,329,752.54 - Step 5: Solve for x
x = 120,010,329,752.54/427,317.99 - Step 6: Final answer
x = 280,845.49
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1.5x scale
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.