Finding the Fourth Proportional to 947,437.40, 1,307,447.76 and 517,707.62
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Solution
The fourth proportional to 947,437.40, 1,307,447.76 and 517,707.62 is: 714,427.85
Step by Step Solution
- Step 1: Write the proportion equation
947,437.40 : 1,307,447.76 = 517,707.62 : x - Step 2: Convert to fraction form
947,437.40/1,307,447.76 = 517,707.62/x - Step 3: Cross multiply
947,437.40x = 1,307,447.76 × 517,707.62 - Step 4: Simplify right side
947,437.40x = 676,875,668,103.93 - Step 5: Solve for x
x = 676,875,668,103.93/947,437.40 - Step 6: Final answer
x = 714,427.85
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1.5x scale
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.