Finding the Fourth Proportional to 860,794,852.05, 1,188,263,432.14 and 578,700,897.03
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Solution
The fourth proportional to 860,794,852.05, 1,188,263,432.14 and 578,700,897.03 is: 798,853,655.37
Step by Step Solution
- Step 1: Write the proportion equation
860,794,852.05 : 1,188,263,432.14 = 578,700,897.03 : x - Step 2: Convert to fraction form
860,794,852.05/1,188,263,432.14 = 578,700,897.03/x - Step 3: Cross multiply
860,794,852.05x = 1,188,263,432.14 × 578,700,897.03 - Step 4: Simplify right side
860,794,852.05x = 687,649,114,087,364,608 - Step 5: Solve for x
x = 687,649,114,087,364,608/860,794,852.05 - Step 6: Final answer
x = 798,853,655.37
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.