Finding the Fourth Proportional to 750,143,986.83, 1,035,198,701.84 and 420,119,125.83
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Solution
The fourth proportional to 750,143,986.83, 1,035,198,701.84 and 420,119,125.83 is: 579,764,393.65
Step by Step Solution
- Step 1: Write the proportion equation
750,143,986.83 : 1,035,198,701.84 = 420,119,125.83 : x - Step 2: Convert to fraction form
750,143,986.83/1,035,198,701.84 = 420,119,125.83/x - Step 3: Cross multiply
750,143,986.83x = 1,035,198,701.84 × 420,119,125.83 - Step 4: Simplify right side
750,143,986.83x = 434,906,773,675,271,040 - Step 5: Solve for x
x = 434,906,773,675,271,040/750,143,986.83 - Step 6: Final answer
x = 579,764,393.65
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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.