Finding the Fourth Proportional to 687,130.74, 948,265.75 and 415,146.08
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Solution
The fourth proportional to 687,130.74, 948,265.75 and 415,146.08 is: 572,916.89
Step by Step Solution
- Step 1: Write the proportion equation
687,130.74 : 948,265.75 = 415,146.08 : x - Step 2: Convert to fraction form
687,130.74/948,265.75 = 415,146.08/x - Step 3: Cross multiply
687,130.74x = 948,265.75 × 415,146.08 - Step 4: Simplify right side
687,130.74x = 393,668,808,910.76 - Step 5: Solve for x
x = 393,668,808,910.76/687,130.74 - Step 6: Final answer
x = 572,916.89
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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.