Finding the Fourth Proportional to 812,148.80, 1,215,890.40 and 497,220.80
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Solution
The fourth proportional to 812,148.80, 1,215,890.40 and 497,220.80 is: 744,402.99
Step by Step Solution
- Step 1: Write the proportion equation
812,148.80 : 1,215,890.40 = 497,220.80 : x - Step 2: Convert to fraction form
812,148.80/1,215,890.40 = 497,220.80/x - Step 3: Cross multiply
812,148.80x = 1,215,890.40 × 497,220.80 - Step 4: Simplify right side
812,148.80x = 604,565,997,400.32 - Step 5: Solve for x
x = 604,565,997,400.32/812,148.80 - Step 6: Final answer
x = 744,402.99
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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.