Finding the Fourth Proportional to 1,438,337.70, 2,155,989.96 and 478,536.93
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Solution
The fourth proportional to 1,438,337.70, 2,155,989.96 and 478,536.93 is: 717,300.82
Step by Step Solution
- Step 1: Write the proportion equation
1,438,337.70 : 2,155,989.96 = 478,536.93 : x - Step 2: Convert to fraction form
1,438,337.70/2,155,989.96 = 478,536.93/x - Step 3: Cross multiply
1,438,337.70x = 2,155,989.96 × 478,536.93 - Step 4: Simplify right side
1,438,337.70x = 1,031,720,816,569.22 - Step 5: Solve for x
x = 1,031,720,816,569.22/1,438,337.70 - Step 6: Final answer
x = 717,300.82
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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.