Finding the Fourth Proportional to 691,934.08, 954,869.16 and 390,128.08
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Solution
The fourth proportional to 691,934.08, 954,869.16 and 390,128.08 is: 538,376.82
Step by Step Solution
- Step 1: Write the proportion equation
691,934.08 : 954,869.16 = 390,128.08 : x - Step 2: Convert to fraction form
691,934.08/954,869.16 = 390,128.08/x - Step 3: Cross multiply
691,934.08x = 954,869.16 × 390,128.08 - Step 4: Simplify right side
691,934.08x = 372,521,272,042.01 - Step 5: Solve for x
x = 372,521,272,042.01/691,934.08 - Step 6: Final answer
x = 538,376.82
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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.