Finding the Fourth Proportional to 742,303,458.12, 1,113,914,987.69 and 431,557,325.31
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Solution
The fourth proportional to 742,303,458.12, 1,113,914,987.69 and 431,557,325.31 is: 647,603,304.89
Step by Step Solution
- Step 1: Write the proportion equation
742,303,458.12 : 1,113,914,987.69 = 431,557,325.31 : x - Step 2: Convert to fraction form
742,303,458.12/1,113,914,987.69 = 431,557,325.31/x - Step 3: Cross multiply
742,303,458.12x = 1,113,914,987.69 × 431,557,325.31 - Step 4: Simplify right side
742,303,458.12x = 480,718,172,712,237,376 - Step 5: Solve for x
x = 480,718,172,712,237,376/742,303,458.12 - Step 6: Final answer
x = 647,603,304.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.