Finding the Fourth Proportional to 1,128,916,801.13, 1,557,949,446.18 and 772,432,291.80
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Solution
The fourth proportional to 1,128,916,801.13, 1,557,949,446.18 and 772,432,291.80 is: 1,065,986,846.88
Step by Step Solution
- Step 1: Write the proportion equation
1,128,916,801.13 : 1,557,949,446.18 = 772,432,291.80 : x - Step 2: Convert to fraction form
1,128,916,801.13/1,557,949,446.18 = 772,432,291.80/x - Step 3: Cross multiply
1,128,916,801.13x = 1,557,949,446.18 × 772,432,291.80 - Step 4: Simplify right side
1,128,916,801.13x = 1,203,410,461,221,358,080 - Step 5: Solve for x
x = 1,203,410,461,221,358,080/1,128,916,801.13 - Step 6: Final answer
x = 1,065,986,846.88
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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.