Finding the Fourth Proportional to 1,174,175,563.74, 1,620,363,315.15 and 645,548,542.62
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Solution
The fourth proportional to 1,174,175,563.74, 1,620,363,315.15 and 645,548,542.62 is: 890,857,559.05
Step by Step Solution
- Step 1: Write the proportion equation
1,174,175,563.74 : 1,620,363,315.15 = 645,548,542.62 : x - Step 2: Convert to fraction form
1,174,175,563.74/1,620,363,315.15 = 645,548,542.62/x - Step 3: Cross multiply
1,174,175,563.74x = 1,620,363,315.15 × 645,548,542.62 - Step 4: Simplify right side
1,174,175,563.74x = 1,046,023,176,609,994,368 - Step 5: Solve for x
x = 1,046,023,176,609,994,368/1,174,175,563.74 - Step 6: Final answer
x = 890,857,559.05
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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.