Finding the Fourth Proportional to 570,435.14, 787,209.84 and 312,307.80
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Solution
The fourth proportional to 570,435.14, 787,209.84 and 312,307.80 is: 430,989.88
Step by Step Solution
- Step 1: Write the proportion equation
570,435.14 : 787,209.84 = 312,307.80 : x - Step 2: Convert to fraction form
570,435.14/787,209.84 = 312,307.80/x - Step 3: Cross multiply
570,435.14x = 787,209.84 × 312,307.80 - Step 4: Simplify right side
570,435.14x = 245,851,773,268.75 - Step 5: Solve for x
x = 245,851,773,268.75/570,435.14 - Step 6: Final answer
x = 430,989.88
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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.