Finding the Fourth Proportional to 935,629,386.62, 1,291,178,757.21 and 517,948,647.08
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Solution
The fourth proportional to 935,629,386.62, 1,291,178,757.21 and 517,948,647.08 is: 714,774,781.55
Step by Step Solution
- Step 1: Write the proportion equation
935,629,386.62 : 1,291,178,757.21 = 517,948,647.08 : x - Step 2: Convert to fraction form
935,629,386.62/1,291,178,757.21 = 517,948,647.08/x - Step 3: Cross multiply
935,629,386.62x = 1,291,178,757.21 × 517,948,647.08 - Step 4: Simplify right side
935,629,386.62x = 668,764,290,438,583,296 - Step 5: Solve for x
x = 668,764,290,438,583,296/935,629,386.62 - Step 6: Final answer
x = 714,774,781.55
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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.