Finding the Fourth Proportional to 772,292,101.20, 1,158,438,151.80 and 708,802,616.40
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Solution
The fourth proportional to 772,292,101.20, 1,158,438,151.80 and 708,802,616.40 is: 1,063,203,924.60
Step by Step Solution
- Step 1: Write the proportion equation
772,292,101.20 : 1,158,438,151.80 = 708,802,616.40 : x - Step 2: Convert to fraction form
772,292,101.20/1,158,438,151.80 = 708,802,616.40/x - Step 3: Cross multiply
772,292,101.20x = 1,158,438,151.80 × 708,802,616.40 - Step 4: Simplify right side
772,292,101.20x = 821,103,992,933,420,288 - Step 5: Solve for x
x = 821,103,992,933,420,288/772,292,101.20 - Step 6: Final answer
x = 1,063,203,924.60
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Double scale
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Similar ratio
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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.