Finding the Fourth Proportional to 472,392,681.30, 708,589,021.95 and 288,726,671.70
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Solution
The fourth proportional to 472,392,681.30, 708,589,021.95 and 288,726,671.70 is: 433,090,007.55
Step by Step Solution
- Step 1: Write the proportion equation
472,392,681.30 : 708,589,021.95 = 288,726,671.70 : x - Step 2: Convert to fraction form
472,392,681.30/708,589,021.95 = 288,726,671.70/x - Step 3: Cross multiply
472,392,681.30x = 708,589,021.95 × 288,726,671.70 - Step 4: Simplify right side
472,392,681.30x = 204,588,549,910,781,760 - Step 5: Solve for x
x = 204,588,549,910,781,760/472,392,681.30 - Step 6: Final answer
x = 433,090,007.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.