Finding the Fourth Proportional to 810,091,309.68, 1,117,931,374.44 and 438,813,337.68
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Solution
The fourth proportional to 810,091,309.68, 1,117,931,374.44 and 438,813,337.68 is: 605,565,313.26
Step by Step Solution
- Step 1: Write the proportion equation
810,091,309.68 : 1,117,931,374.44 = 438,813,337.68 : x - Step 2: Convert to fraction form
810,091,309.68/1,117,931,374.44 = 438,813,337.68/x - Step 3: Cross multiply
810,091,309.68x = 1,117,931,374.44 × 438,813,337.68 - Step 4: Simplify right side
810,091,309.68x = 490,563,197,715,206,272 - Step 5: Solve for x
x = 490,563,197,715,206,272/810,091,309.68 - Step 6: Final answer
x = 605,565,313.26
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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.