Finding the Fourth Proportional to 919,428, 1,378,880.64 and 387,070.08
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Solution
The fourth proportional to 919,428, 1,378,880.64 and 387,070.08 is: 580,495.09
Step by Step Solution
- Step 1: Write the proportion equation
919,428 : 1,378,880.64 = 387,070.08 : x - Step 2: Convert to fraction form
919,428/1,378,880.64 = 387,070.08/x - Step 3: Cross multiply
919,428x = 1,378,880.64 × 387,070.08 - Step 4: Simplify right side
919,428x = 533,723,439,635.25 - Step 5: Solve for x
x = 533,723,439,635.25/919,428 - Step 6: Final answer
x = 580,495.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.