Finding the Fourth Proportional to 809,816,601.28, 1,117,547,987.52 and 438,539,272.96
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Solution
The fourth proportional to 809,816,601.28, 1,117,547,987.52 and 438,539,272.96 is: 605,184,780.32
Step by Step Solution
- Step 1: Write the proportion equation
809,816,601.28 : 1,117,547,987.52 = 438,539,272.96 : x - Step 2: Convert to fraction form
809,816,601.28/1,117,547,987.52 = 438,539,272.96/x - Step 3: Cross multiply
809,816,601.28x = 1,117,547,987.52 × 438,539,272.96 - Step 4: Simplify right side
809,816,601.28x = 490,088,681,944,931,904 - Step 5: Solve for x
x = 490,088,681,944,931,904/809,816,601.28 - Step 6: Final answer
x = 605,184,780.32
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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.