Finding the Fourth Proportional to 1,270,748,276.70, 1,906,122,415.05 and 452,565,332.70
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Solution
The fourth proportional to 1,270,748,276.70, 1,906,122,415.05 and 452,565,332.70 is: 678,847,999.05
Step by Step Solution
- Step 1: Write the proportion equation
1,270,748,276.70 : 1,906,122,415.05 = 452,565,332.70 : x - Step 2: Convert to fraction form
1,270,748,276.70/1,906,122,415.05 = 452,565,332.70/x - Step 3: Cross multiply
1,270,748,276.70x = 1,906,122,415.05 × 452,565,332.70 - Step 4: Simplify right side
1,270,748,276.70x = 862,644,924,934,030,720 - Step 5: Solve for x
x = 862,644,924,934,030,720/1,270,748,276.70 - Step 6: Final answer
x = 678,847,999.05
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Double scale
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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.