Finding the Fourth Proportional to 1,038,486.70, 1,557,730.05 and 478,614.70
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Solution
The fourth proportional to 1,038,486.70, 1,557,730.05 and 478,614.70 is: 717,922.05
Step by Step Solution
- Step 1: Write the proportion equation
1,038,486.70 : 1,557,730.05 = 478,614.70 : x - Step 2: Convert to fraction form
1,038,486.70/1,557,730.05 = 478,614.70/x - Step 3: Cross multiply
1,038,486.70x = 1,557,730.05 × 478,614.70 - Step 4: Simplify right side
1,038,486.70x = 745,552,500,561.74 - Step 5: Solve for x
x = 745,552,500,561.74/1,038,486.70 - Step 6: Final answer
x = 717,922.05
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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.