Finding the Fourth Proportional to 717,227.18, 989,779.98 and 394,948.70
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Solution
The fourth proportional to 717,227.18, 989,779.98 and 394,948.70 is: 545,032.77
Step by Step Solution
- Step 1: Write the proportion equation
717,227.18 : 989,779.98 = 394,948.70 : x - Step 2: Convert to fraction form
717,227.18/989,779.98 = 394,948.70/x - Step 3: Cross multiply
717,227.18x = 989,779.98 × 394,948.70 - Step 4: Simplify right side
717,227.18x = 390,912,316,387.03 - Step 5: Solve for x
x = 390,912,316,387.03/717,227.18 - Step 6: Final answer
x = 545,032.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.