Finding the Fourth Proportional to 2,588,928,005.70, 3,883,392,008.55 and 865,641,989.70
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Solution
The fourth proportional to 2,588,928,005.70, 3,883,392,008.55 and 865,641,989.70 is: 1,298,462,984.55
Step by Step Solution
- Step 1: Write the proportion equation
2,588,928,005.70 : 3,883,392,008.55 = 865,641,989.70 : x - Step 2: Convert to fraction form
2,588,928,005.70/3,883,392,008.55 = 865,641,989.70/x - Step 3: Cross multiply
2,588,928,005.70x = 3,883,392,008.55 × 865,641,989.70 - Step 4: Simplify right side
2,588,928,005.70x = 3,361,627,185,066,301,952 - Step 5: Solve for x
x = 3,361,627,185,066,301,952/2,588,928,005.70 - Step 6: Final answer
x = 1,298,462,984.55
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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.