Finding the Fourth Proportional to 665,860.79, 918,284.64 and 436,334.70
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Solution
The fourth proportional to 665,860.79, 918,284.64 and 436,334.70 is: 601,746.59
Step by Step Solution
- Step 1: Write the proportion equation
665,860.79 : 918,284.64 = 436,334.70 : x - Step 2: Convert to fraction form
665,860.79/918,284.64 = 436,334.70/x - Step 3: Cross multiply
665,860.79x = 918,284.64 × 436,334.70 - Step 4: Simplify right side
665,860.79x = 400,679,454,716.32 - Step 5: Solve for x
x = 400,679,454,716.32/665,860.79 - Step 6: Final answer
x = 601,746.59
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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.