Finding the Fourth Proportional to 687,603.78, 1,031,616.84 and 328,233.24
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Solution
The fourth proportional to 687,603.78, 1,031,616.84 and 328,233.24 is: 492,450.66
Step by Step Solution
- Step 1: Write the proportion equation
687,603.78 : 1,031,616.84 = 328,233.24 : x - Step 2: Convert to fraction form
687,603.78/1,031,616.84 = 328,233.24/x - Step 3: Cross multiply
687,603.78x = 1,031,616.84 × 328,233.24 - Step 4: Simplify right side
687,603.78x = 338,610,937,831.76 - Step 5: Solve for x
x = 338,610,937,831.76/687,603.78 - Step 6: Final answer
x = 492,450.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.