Finding the Fourth Proportional to 687,670.25, 1,031,729.49 and 345,937.28
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Solution
The fourth proportional to 687,670.25, 1,031,729.49 and 345,937.28 is: 519,018.66
Step by Step Solution
- Step 1: Write the proportion equation
687,670.25 : 1,031,729.49 = 345,937.28 : x - Step 2: Convert to fraction form
687,670.25/1,031,729.49 = 345,937.28/x - Step 3: Cross multiply
687,670.25x = 1,031,729.49 × 345,937.28 - Step 4: Simplify right side
687,670.25x = 356,913,688,307.74 - Step 5: Solve for x
x = 356,913,688,307.74/687,670.25 - Step 6: Final answer
x = 519,018.66
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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.