Finding the Fourth Proportional to 879,615.84, 1,214,000.40 and 557,356.12
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Solution
The fourth proportional to 879,615.84, 1,214,000.40 and 557,356.12 is: 769,234.17
Step by Step Solution
- Step 1: Write the proportion equation
879,615.84 : 1,214,000.40 = 557,356.12 : x - Step 2: Convert to fraction form
879,615.84/1,214,000.40 = 557,356.12/x - Step 3: Cross multiply
879,615.84x = 1,214,000.40 × 557,356.12 - Step 4: Simplify right side
879,615.84x = 676,630,552,622.45 - Step 5: Solve for x
x = 676,630,552,622.45/879,615.84 - Step 6: Final answer
x = 769,234.17
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1.5x scale
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.