Finding the Fourth Proportional to 807,841,280.20, 1,211,761,920.30 and 708,072,089.80
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Solution
The fourth proportional to 807,841,280.20, 1,211,761,920.30 and 708,072,089.80 is: 1,062,108,134.70
Step by Step Solution
- Step 1: Write the proportion equation
807,841,280.20 : 1,211,761,920.30 = 708,072,089.80 : x - Step 2: Convert to fraction form
807,841,280.20/1,211,761,920.30 = 708,072,089.80/x - Step 3: Cross multiply
807,841,280.20x = 1,211,761,920.30 × 708,072,089.80 - Step 4: Simplify right side
807,841,280.20x = 858,014,795,246,881,920 - Step 5: Solve for x
x = 858,014,795,246,881,920/807,841,280.20 - Step 6: Final answer
x = 1,062,108,134.70
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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.