Finding the Fourth Proportional to 1,315,656.39, 1,815,657.99 and 742,716.39
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Solution
The fourth proportional to 1,315,656.39, 1,815,657.99 and 742,716.39 is: 1,024,978.07
Step by Step Solution
- Step 1: Write the proportion equation
1,315,656.39 : 1,815,657.99 = 742,716.39 : x - Step 2: Convert to fraction form
1,315,656.39/1,815,657.99 = 742,716.39/x - Step 3: Cross multiply
1,315,656.39x = 1,815,657.99 × 742,716.39 - Step 4: Simplify right side
1,315,656.39x = 1,348,518,947,807.46 - Step 5: Solve for x
x = 1,348,518,947,807.46/1,315,656.39 - Step 6: Final answer
x = 1,024,978.07
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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.