Finding the Fourth Proportional to 931,830.09, 1,282,752.09 and 689,656.29
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Solution
The fourth proportional to 931,830.09, 1,282,752.09 and 689,656.29 is: 949,376.99
Step by Step Solution
- Step 1: Write the proportion equation
931,830.09 : 1,282,752.09 = 689,656.29 : x - Step 2: Convert to fraction form
931,830.09/1,282,752.09 = 689,656.29/x - Step 3: Cross multiply
931,830.09x = 1,282,752.09 × 689,656.29 - Step 4: Simplify right side
931,830.09x = 884,658,047,379.15 - Step 5: Solve for x
x = 884,658,047,379.15/931,830.09 - Step 6: Final answer
x = 949,376.99
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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.