Finding the Fourth Proportional to 912,941,550.21, 1,259,209,864.68 and 837,830,429.55
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Solution
The fourth proportional to 912,941,550.21, 1,259,209,864.68 and 837,830,429.55 is: 1,155,609,952.88
Step by Step Solution
- Step 1: Write the proportion equation
912,941,550.21 : 1,259,209,864.68 = 837,830,429.55 : x - Step 2: Convert to fraction form
912,941,550.21/1,259,209,864.68 = 837,830,429.55/x - Step 3: Cross multiply
912,941,550.21x = 1,259,209,864.68 × 837,830,429.55 - Step 4: Simplify right side
912,941,550.21x = 1,055,004,341,818,441,728 - Step 5: Solve for x
x = 1,055,004,341,818,441,728/912,941,550.21 - Step 6: Final answer
x = 1,155,609,952.88
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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.