Finding the Fourth Proportional to 399,595.80, 550,319.58 and 390,886.68
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Solution
The fourth proportional to 399,595.80, 550,319.58 and 390,886.68 is: 538,325.46
Step by Step Solution
- Step 1: Write the proportion equation
399,595.80 : 550,319.58 = 390,886.68 : x - Step 2: Convert to fraction form
399,595.80/550,319.58 = 390,886.68/x - Step 3: Cross multiply
399,595.80x = 550,319.58 × 390,886.68 - Step 4: Simplify right side
399,595.80x = 215,112,593,565.19 - Step 5: Solve for x
x = 215,112,593,565.19/399,595.80 - Step 6: Final answer
x = 538,325.46
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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.