Finding the Fourth Proportional to 1,248,416,973.36, 1,871,273,822.76 and 812,029,512.24
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Solution
The fourth proportional to 1,248,416,973.36, 1,871,273,822.76 and 812,029,512.24 is: 1,217,165,099.47
Step by Step Solution
- Step 1: Write the proportion equation
1,248,416,973.36 : 1,871,273,822.76 = 812,029,512.24 : x - Step 2: Convert to fraction form
1,248,416,973.36/1,871,273,822.76 = 812,029,512.24/x - Step 3: Cross multiply
1,248,416,973.36x = 1,871,273,822.76 × 812,029,512.24 - Step 4: Simplify right side
1,248,416,973.36x = 1,519,529,569,563,282,944 - Step 5: Solve for x
x = 1,519,529,569,563,282,944/1,248,416,973.36 - Step 6: Final answer
x = 1,217,165,099.47
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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.