Finding the Fourth Proportional to 781,903,212.64, 1,079,214,359.34 and 447,569,543.68
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Solution
The fourth proportional to 781,903,212.64, 1,079,214,359.34 and 447,569,543.68 is: 617,753,541.02
Step by Step Solution
- Step 1: Write the proportion equation
781,903,212.64 : 1,079,214,359.34 = 447,569,543.68 : x - Step 2: Convert to fraction form
781,903,212.64/1,079,214,359.34 = 447,569,543.68/x - Step 3: Cross multiply
781,903,212.64x = 1,079,214,359.34 × 447,569,543.68 - Step 4: Simplify right side
781,903,212.64x = 483,023,478,342,707,328 - Step 5: Solve for x
x = 483,023,478,342,707,328/781,903,212.64 - Step 6: Final answer
x = 617,753,541.02
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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.