Finding the Fourth Proportional to 390,315.47, 585,347.79 and 124,013.75
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Solution
The fourth proportional to 390,315.47, 585,347.79 and 124,013.75 is: 185,980.77
Step by Step Solution
- Step 1: Write the proportion equation
390,315.47 : 585,347.79 = 124,013.75 : x - Step 2: Convert to fraction form
390,315.47/585,347.79 = 124,013.75/x - Step 3: Cross multiply
390,315.47x = 585,347.79 × 124,013.75 - Step 4: Simplify right side
390,315.47x = 72,591,171,565.37 - Step 5: Solve for x
x = 72,591,171,565.37/390,315.47 - Step 6: Final answer
x = 185,980.77
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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.