Finding the Fourth Proportional to 910,127,218.98, 1,255,966,620.57 and 492,430,339.38
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Solution
The fourth proportional to 910,127,218.98, 1,255,966,620.57 and 492,430,339.38 is: 679,549,030.42
Step by Step Solution
- Step 1: Write the proportion equation
910,127,218.98 : 1,255,966,620.57 = 492,430,339.38 : x - Step 2: Convert to fraction form
910,127,218.98/1,255,966,620.57 = 492,430,339.38/x - Step 3: Cross multiply
910,127,218.98x = 1,255,966,620.57 × 492,430,339.38 - Step 4: Simplify right side
910,127,218.98x = 618,476,069,217,236,736 - Step 5: Solve for x
x = 618,476,069,217,236,736/910,127,218.98 - Step 6: Final answer
x = 679,549,030.42
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1.5x scale
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.