Finding the Fourth Proportional to 1,023,302,257.88, 1,412,161,370.51 and 553,403,578.68
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Solution
The fourth proportional to 1,023,302,257.88, 1,412,161,370.51 and 553,403,578.68 is: 763,699,239.49
Step by Step Solution
- Step 1: Write the proportion equation
1,023,302,257.88 : 1,412,161,370.51 = 553,403,578.68 : x - Step 2: Convert to fraction form
1,023,302,257.88/1,412,161,370.51 = 553,403,578.68/x - Step 3: Cross multiply
1,023,302,257.88x = 1,412,161,370.51 × 553,403,578.68 - Step 4: Simplify right side
1,023,302,257.88x = 781,495,156,111,120,384 - Step 5: Solve for x
x = 781,495,156,111,120,384/1,023,302,257.88 - Step 6: Final answer
x = 763,699,239.49
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Double scale
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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.