Finding the Fourth Proportional to 1,919,128,520.70, 2,878,692,759.45 and 465,105,944.70
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Solution
The fourth proportional to 1,919,128,520.70, 2,878,692,759.45 and 465,105,944.70 is: 697,658,911.82
Step by Step Solution
- Step 1: Write the proportion equation
1,919,128,520.70 : 2,878,692,759.45 = 465,105,944.70 : x - Step 2: Convert to fraction form
1,919,128,520.70/2,878,692,759.45 = 465,105,944.70/x - Step 3: Cross multiply
1,919,128,520.70x = 2,878,692,759.45 × 465,105,944.70 - Step 4: Simplify right side
1,919,128,520.70x = 1,338,897,115,385,041,920 - Step 5: Solve for x
x = 1,338,897,115,385,041,920/1,919,128,520.70 - Step 6: Final answer
x = 697,658,911.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.