Finding the Fourth Proportional to 817,412.68, 1,226,119.70 and 390,848.14
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Solution
The fourth proportional to 817,412.68, 1,226,119.70 and 390,848.14 is: 586,272.54
Step by Step Solution
- Step 1: Write the proportion equation
817,412.68 : 1,226,119.70 = 390,848.14 : x - Step 2: Convert to fraction form
817,412.68/1,226,119.70 = 390,848.14/x - Step 3: Cross multiply
817,412.68x = 1,226,119.70 × 390,848.14 - Step 4: Simplify right side
817,412.68x = 479,226,604,162.36 - Step 5: Solve for x
x = 479,226,604,162.36/817,412.68 - Step 6: Final answer
x = 586,272.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.