Finding the Fourth Proportional to 851,523,206.40, 1,277,284,809.60 and 765,358,905.60
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Solution
The fourth proportional to 851,523,206.40, 1,277,284,809.60 and 765,358,905.60 is: 1,148,038,358.40
Step by Step Solution
- Step 1: Write the proportion equation
851,523,206.40 : 1,277,284,809.60 = 765,358,905.60 : x - Step 2: Convert to fraction form
851,523,206.40/1,277,284,809.60 = 765,358,905.60/x - Step 3: Cross multiply
851,523,206.40x = 1,277,284,809.60 × 765,358,905.60 - Step 4: Simplify right side
851,523,206.40x = 977,581,304,014,960,384 - Step 5: Solve for x
x = 977,581,304,014,960,384/851,523,206.40 - Step 6: Final answer
x = 1,148,038,358.40
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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.