Finding the Fourth Proportional to 817,762.80, 1,128,512.58 and 455,178.84
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Solution
The fourth proportional to 817,762.80, 1,128,512.58 and 455,178.84 is: 628,146.75
Step by Step Solution
- Step 1: Write the proportion equation
817,762.80 : 1,128,512.58 = 455,178.84 : x - Step 2: Convert to fraction form
817,762.80/1,128,512.58 = 455,178.84/x - Step 3: Cross multiply
817,762.80x = 1,128,512.58 × 455,178.84 - Step 4: Simplify right side
817,762.80x = 513,675,047,089.81 - Step 5: Solve for x
x = 513,675,047,089.81/817,762.80 - Step 6: Final answer
x = 628,146.75
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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.