Finding the Fourth Proportional to 1,388,368.74, 1,915,953.36 and 776,532
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Solution
The fourth proportional to 1,388,368.74, 1,915,953.36 and 776,532 is: 1,071,616.68
Step by Step Solution
- Step 1: Write the proportion equation
1,388,368.74 : 1,915,953.36 = 776,532 : x - Step 2: Convert to fraction form
1,388,368.74/1,915,953.36 = 776,532/x - Step 3: Cross multiply
1,388,368.74x = 1,915,953.36 × 776,532 - Step 4: Simplify right side
1,388,368.74x = 1,487,799,094,547.52 - Step 5: Solve for x
x = 1,487,799,094,547.52/1,388,368.74 - Step 6: Final answer
x = 1,071,616.68
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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.