Finding the Fourth Proportional to 817,978.17, 1,128,517.74 and 473,626.17
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Solution
The fourth proportional to 817,978.17, 1,128,517.74 and 473,626.17 is: 653,434.96
Step by Step Solution
- Step 1: Write the proportion equation
817,978.17 : 1,128,517.74 = 473,626.17 : x - Step 2: Convert to fraction form
817,978.17/1,128,517.74 = 473,626.17/x - Step 3: Cross multiply
817,978.17x = 1,128,517.74 × 473,626.17 - Step 4: Simplify right side
817,978.17x = 534,495,534,973.26 - Step 5: Solve for x
x = 534,495,534,973.26/817,978.17 - Step 6: Final answer
x = 653,434.96
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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.