Finding the Fourth Proportional to 817,683.56, 1,128,391.86 and 455,107.51
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Solution
The fourth proportional to 817,683.56, 1,128,391.86 and 455,107.51 is: 628,041.99
Step by Step Solution
- Step 1: Write the proportion equation
817,683.56 : 1,128,391.86 = 455,107.51 : x - Step 2: Convert to fraction form
817,683.56/1,128,391.86 = 455,107.51/x - Step 3: Cross multiply
817,683.56x = 1,128,391.86 × 455,107.51 - Step 4: Simplify right side
817,683.56x = 513,539,612,826.01 - Step 5: Solve for x
x = 513,539,612,826.01/817,683.56 - Step 6: Final answer
x = 628,041.99
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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.