Finding the Fourth Proportional to 695,987.28, 960,529.86 and 390,115.62
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Solution
The fourth proportional to 695,987.28, 960,529.86 and 390,115.62 is: 538,397.34
Step by Step Solution
- Step 1: Write the proportion equation
695,987.28 : 960,529.86 = 390,115.62 : x - Step 2: Convert to fraction form
695,987.28/960,529.86 = 390,115.62/x - Step 3: Cross multiply
695,987.28x = 960,529.86 × 390,115.62 - Step 4: Simplify right side
695,987.28x = 374,717,701,862.41 - Step 5: Solve for x
x = 374,717,701,862.41/695,987.28 - Step 6: Final answer
x = 538,397.34
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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.