Finding the Fourth Proportional to 472,392,023.80, 708,588,035.70 and 442,158,935.80
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Solution
The fourth proportional to 472,392,023.80, 708,588,035.70 and 442,158,935.80 is: 663,238,403.70
Step by Step Solution
- Step 1: Write the proportion equation
472,392,023.80 : 708,588,035.70 = 442,158,935.80 : x - Step 2: Convert to fraction form
472,392,023.80/708,588,035.70 = 442,158,935.80/x - Step 3: Cross multiply
472,392,023.80x = 708,588,035.70 × 442,158,935.80 - Step 4: Simplify right side
472,392,023.80x = 313,308,531,785,724,416 - Step 5: Solve for x
x = 313,308,531,785,724,416/472,392,023.80 - Step 6: Final answer
x = 663,238,403.70
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1.5x scale
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.