Finding the Fourth Proportional to 561,430.51, 774,776.09 and 306,781.70
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Solution
The fourth proportional to 561,430.51, 774,776.09 and 306,781.70 is: 423,359.82
Step by Step Solution
- Step 1: Write the proportion equation
561,430.51 : 774,776.09 = 306,781.70 : x - Step 2: Convert to fraction form
561,430.51/774,776.09 = 306,781.70/x - Step 3: Cross multiply
561,430.51x = 774,776.09 × 306,781.70 - Step 4: Simplify right side
561,430.51x = 237,687,120,601.76 - Step 5: Solve for x
x = 237,687,120,601.76/561,430.51 - Step 6: Final answer
x = 423,359.82
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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.