Finding the Fourth Proportional to 2,155,866,263.21, 3,235,243,894.65 and 756,854,690.60
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Solution
The fourth proportional to 2,155,866,263.21, 3,235,243,894.65 and 756,854,690.60 is: 1,135,789,152.92
Step by Step Solution
- Step 1: Write the proportion equation
2,155,866,263.21 : 3,235,243,894.65 = 756,854,690.60 : x - Step 2: Convert to fraction form
2,155,866,263.21/3,235,243,894.65 = 756,854,690.60/x - Step 3: Cross multiply
2,155,866,263.21x = 3,235,243,894.65 × 756,854,690.60 - Step 4: Simplify right side
2,155,866,263.21x = 2,448,609,516,908,952,576 - Step 5: Solve for x
x = 2,448,609,516,908,952,576/2,155,866,263.21 - Step 6: Final answer
x = 1,135,789,152.92
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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.