Finding the Fourth Proportional to 2,123,459,681.66, 2,931,629,934.69 and 1,887,858,469.11
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Solution
The fourth proportional to 2,123,459,681.66, 2,931,629,934.69 and 1,887,858,469.11 is: 2,606,360,953.45
Step by Step Solution
- Step 1: Write the proportion equation
2,123,459,681.66 : 2,931,629,934.69 = 1,887,858,469.11 : x - Step 2: Convert to fraction form
2,123,459,681.66/2,931,629,934.69 = 1,887,858,469.11/x - Step 3: Cross multiply
2,123,459,681.66x = 2,931,629,934.69 × 1,887,858,469.11 - Step 4: Simplify right side
2,123,459,681.66x = 5,534,502,400,500,912,128 - Step 5: Solve for x
x = 5,534,502,400,500,912,128/2,123,459,681.66 - Step 6: Final answer
x = 2,606,360,953.45
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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.