Finding the Fourth Proportional to 459,963.36, 686,447.55 and 429,507.09
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Solution
The fourth proportional to 459,963.36, 686,447.55 and 429,507.09 is: 640,994.73
Step by Step Solution
- Step 1: Write the proportion equation
459,963.36 : 686,447.55 = 429,507.09 : x - Step 2: Convert to fraction form
459,963.36/686,447.55 = 429,507.09/x - Step 3: Cross multiply
459,963.36x = 686,447.55 × 429,507.09 - Step 4: Simplify right side
459,963.36x = 294,834,089,638.13 - Step 5: Solve for x
x = 294,834,089,638.13/459,963.36 - Step 6: Final answer
x = 640,994.73
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.