Finding the Fourth Proportional to 781,449.63, 1,078,567.98 and 509,031.45
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Solution
The fourth proportional to 781,449.63, 1,078,567.98 and 509,031.45 is: 702,572.50
Step by Step Solution
- Step 1: Write the proportion equation
781,449.63 : 1,078,567.98 = 509,031.45 : x - Step 2: Convert to fraction form
781,449.63/1,078,567.98 = 509,031.45/x - Step 3: Cross multiply
781,449.63x = 1,078,567.98 × 509,031.45 - Step 4: Simplify right side
781,449.63x = 549,025,022,782.97 - Step 5: Solve for x
x = 549,025,022,782.97/781,449.63 - Step 6: Final answer
x = 702,572.50
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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.