Finding the Fourth Proportional to 836,875.78, 1,155,444.68 and 642,938.09
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Solution
The fourth proportional to 836,875.78, 1,155,444.68 and 642,938.09 is: 887,681.79
Step by Step Solution
- Step 1: Write the proportion equation
836,875.78 : 1,155,444.68 = 642,938.09 : x - Step 2: Convert to fraction form
836,875.78/1,155,444.68 = 642,938.09/x - Step 3: Cross multiply
836,875.78x = 1,155,444.68 × 642,938.09 - Step 4: Simplify right side
836,875.78x = 742,879,391,489.98 - Step 5: Solve for x
x = 742,879,391,489.98/836,875.78 - Step 6: Final answer
x = 887,681.79
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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.