Finding the Fourth Proportional to 817,747.54, 1,128,491.45 and 455,163.59
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Solution
The fourth proportional to 817,747.54, 1,128,491.45 and 455,163.59 is: 628,125.67
Step by Step Solution
- Step 1: Write the proportion equation
817,747.54 : 1,128,491.45 = 455,163.59 : x - Step 2: Convert to fraction form
817,747.54/1,128,491.45 = 455,163.59/x - Step 3: Cross multiply
817,747.54x = 1,128,491.45 × 455,163.59 - Step 4: Simplify right side
817,747.54x = 513,648,219,666.31 - Step 5: Solve for x
x = 513,648,219,666.31/817,747.54 - Step 6: Final answer
x = 628,125.67
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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.