Finding the Fourth Proportional to 645,315.14, 890,498.32 and 358,829.08
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Solution
The fourth proportional to 645,315.14, 890,498.32 and 358,829.08 is: 495,163.79
Step by Step Solution
- Step 1: Write the proportion equation
645,315.14 : 890,498.32 = 358,829.08 : x - Step 2: Convert to fraction form
645,315.14/890,498.32 = 358,829.08/x - Step 3: Cross multiply
645,315.14x = 890,498.32 × 358,829.08 - Step 4: Simplify right side
645,315.14x = 319,536,692,907.15 - Step 5: Solve for x
x = 319,536,692,907.15/645,315.14 - Step 6: Final answer
x = 495,163.79
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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.