Finding the Fourth Proportional to 1,299,337,652.70, 1,949,006,479.05 and 644,389,764.30
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Solution
The fourth proportional to 1,299,337,652.70, 1,949,006,479.05 and 644,389,764.30 is: 966,584,646.45
Step by Step Solution
- Step 1: Write the proportion equation
1,299,337,652.70 : 1,949,006,479.05 = 644,389,764.30 : x - Step 2: Convert to fraction form
1,299,337,652.70/1,949,006,479.05 = 644,389,764.30/x - Step 3: Cross multiply
1,299,337,652.70x = 1,949,006,479.05 × 644,389,764.30 - Step 4: Simplify right side
1,299,337,652.70x = 1,255,919,825,654,202,368 - Step 5: Solve for x
x = 1,255,919,825,654,202,368/1,299,337,652.70 - Step 6: Final answer
x = 966,584,646.45
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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.