Finding the Fourth Proportional to 817,612.64, 1,128,305.43 and 455,122.13
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Solution
The fourth proportional to 817,612.64, 1,128,305.43 and 455,122.13 is: 628,068.53
Step by Step Solution
- Step 1: Write the proportion equation
817,612.64 : 1,128,305.43 = 455,122.13 : x - Step 2: Convert to fraction form
817,612.64/1,128,305.43 = 455,122.13/x - Step 3: Cross multiply
817,612.64x = 1,128,305.43 × 455,122.13 - Step 4: Simplify right side
817,612.64x = 513,516,770,592.17 - Step 5: Solve for x
x = 513,516,770,592.17/817,612.64 - Step 6: Final answer
x = 628,068.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.