Finding the Fourth Proportional to 518,545,768.66, 715,549,901.77 and 292,472,294.18
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Solution
The fourth proportional to 518,545,768.66, 715,549,901.77 and 292,472,294.18 is: 403,587,366.86
Step by Step Solution
- Step 1: Write the proportion equation
518,545,768.66 : 715,549,901.77 = 292,472,294.18 : x - Step 2: Convert to fraction form
518,545,768.66/715,549,901.77 = 292,472,294.18/x - Step 3: Cross multiply
518,545,768.66x = 715,549,901.77 × 292,472,294.18 - Step 4: Simplify right side
518,545,768.66x = 209,278,521,366,636,640 - Step 5: Solve for x
x = 209,278,521,366,636,640/518,545,768.66 - Step 6: Final answer
x = 403,587,366.86
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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.