Finding the Fourth Proportional to 519,981.80, 779,972.70 and 348,739.70
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Solution
The fourth proportional to 519,981.80, 779,972.70 and 348,739.70 is: 523,109.55
Step by Step Solution
- Step 1: Write the proportion equation
519,981.80 : 779,972.70 = 348,739.70 : x - Step 2: Convert to fraction form
519,981.80/779,972.70 = 348,739.70/x - Step 3: Cross multiply
519,981.80x = 779,972.70 × 348,739.70 - Step 4: Simplify right side
519,981.80x = 272,007,445,406.19 - Step 5: Solve for x
x = 272,007,445,406.19/519,981.80 - Step 6: Final answer
x = 523,109.55
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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.