Finding the Fourth Proportional to 688,305,102.66, 949,849,082.28 and 375,041,890.80
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Solution
The fourth proportional to 688,305,102.66, 949,849,082.28 and 375,041,890.80 is: 517,551,292.90
Step by Step Solution
- Step 1: Write the proportion equation
688,305,102.66 : 949,849,082.28 = 375,041,890.80 : x - Step 2: Convert to fraction form
688,305,102.66/949,849,082.28 = 375,041,890.80/x - Step 3: Cross multiply
688,305,102.66x = 949,849,082.28 × 375,041,890.80 - Step 4: Simplify right side
688,305,102.66x = 356,233,195,792,936,000 - Step 5: Solve for x
x = 356,233,195,792,936,000/688,305,102.66 - Step 6: Final answer
x = 517,551,292.90
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1.5x scale
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.