Finding the Fourth Proportional to 403,358.40, 605,037.60 and 385,643.70
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Solution
The fourth proportional to 403,358.40, 605,037.60 and 385,643.70 is: 578,465.55
Step by Step Solution
- Step 1: Write the proportion equation
403,358.40 : 605,037.60 = 385,643.70 : x - Step 2: Convert to fraction form
403,358.40/605,037.60 = 385,643.70/x - Step 3: Cross multiply
403,358.40x = 605,037.60 × 385,643.70 - Step 4: Simplify right side
403,358.40x = 233,328,938,703.12 - Step 5: Solve for x
x = 233,328,938,703.12/403,358.40 - Step 6: Final answer
x = 578,465.55
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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.