Finding the Fourth Proportional to 1,208,955,214.60, 1,813,432,821.90 and 442,950,785.80
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Solution
The fourth proportional to 1,208,955,214.60, 1,813,432,821.90 and 442,950,785.80 is: 664,426,178.70
Step by Step Solution
- Step 1: Write the proportion equation
1,208,955,214.60 : 1,813,432,821.90 = 442,950,785.80 : x - Step 2: Convert to fraction form
1,208,955,214.60/1,813,432,821.90 = 442,950,785.80/x - Step 3: Cross multiply
1,208,955,214.60x = 1,813,432,821.90 × 442,950,785.80 - Step 4: Simplify right side
1,208,955,214.60x = 803,261,493,456,116,480 - Step 5: Solve for x
x = 803,261,493,456,116,480/1,208,955,214.60 - Step 6: Final answer
x = 664,426,178.70
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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.