Finding the Fourth Proportional to 858,762,099.20, 1,288,143,148.80 and 586,664,307.20
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Solution
The fourth proportional to 858,762,099.20, 1,288,143,148.80 and 586,664,307.20 is: 879,996,460.80
Step by Step Solution
- Step 1: Write the proportion equation
858,762,099.20 : 1,288,143,148.80 = 586,664,307.20 : x - Step 2: Convert to fraction form
858,762,099.20/1,288,143,148.80 = 586,664,307.20/x - Step 3: Cross multiply
858,762,099.20x = 1,288,143,148.80 × 586,664,307.20 - Step 4: Simplify right side
858,762,099.20x = 755,707,607,965,178,496 - Step 5: Solve for x
x = 755,707,607,965,178,496/858,762,099.20 - Step 6: Final answer
x = 879,996,460.80
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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.