Finding the Fourth Proportional to 851,537,128.80, 1,175,119,026.12 and 475,189,768.02
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Solution
The fourth proportional to 851,537,128.80, 1,175,119,026.12 and 475,189,768.02 is: 655,760,645.70
Step by Step Solution
- Step 1: Write the proportion equation
851,537,128.80 : 1,175,119,026.12 = 475,189,768.02 : x - Step 2: Convert to fraction form
851,537,128.80/1,175,119,026.12 = 475,189,768.02/x - Step 3: Cross multiply
851,537,128.80x = 1,175,119,026.12 × 475,189,768.02 - Step 4: Simplify right side
851,537,128.80x = 558,404,537,417,851,072 - Step 5: Solve for x
x = 558,404,537,417,851,072/851,537,128.80 - Step 6: Final answer
x = 655,760,645.70
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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.