Finding the Fourth Proportional to 817,416.68, 1,226,125.70 and 390,852.14
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Solution
The fourth proportional to 817,416.68, 1,226,125.70 and 390,852.14 is: 586,278.54
Step by Step Solution
- Step 1: Write the proportion equation
817,416.68 : 1,226,125.70 = 390,852.14 : x - Step 2: Convert to fraction form
817,416.68/1,226,125.70 = 390,852.14/x - Step 3: Cross multiply
817,416.68x = 1,226,125.70 × 390,852.14 - Step 4: Simplify right side
817,416.68x = 479,233,853,754.00 - Step 5: Solve for x
x = 479,233,853,754.00/817,416.68 - Step 6: Final answer
x = 586,278.54
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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.