Finding the Fourth Proportional to 746,808,905.70, 1,120,213,358.55 and 402,435,137.70
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Solution
The fourth proportional to 746,808,905.70, 1,120,213,358.55 and 402,435,137.70 is: 603,652,706.55
Step by Step Solution
- Step 1: Write the proportion equation
746,808,905.70 : 1,120,213,358.55 = 402,435,137.70 : x - Step 2: Convert to fraction form
746,808,905.70/1,120,213,358.55 = 402,435,137.70/x - Step 3: Cross multiply
746,808,905.70x = 1,120,213,358.55 × 402,435,137.70 - Step 4: Simplify right side
746,808,905.70x = 450,813,217,201,448,704 - Step 5: Solve for x
x = 450,813,217,201,448,704/746,808,905.70 - Step 6: Final answer
x = 603,652,706.55
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Double scale
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Similar ratio
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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.