Finding the Fourth Proportional to 916,960,279.20, 1,375,440,418.80 and 832,307,632.80
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Solution
The fourth proportional to 916,960,279.20, 1,375,440,418.80 and 832,307,632.80 is: 1,248,461,449.20
Step by Step Solution
- Step 1: Write the proportion equation
916,960,279.20 : 1,375,440,418.80 = 832,307,632.80 : x - Step 2: Convert to fraction form
916,960,279.20/1,375,440,418.80 = 832,307,632.80/x - Step 3: Cross multiply
916,960,279.20x = 1,375,440,418.80 × 832,307,632.80 - Step 4: Simplify right side
916,960,279.20x = 1,144,789,559,028,868,480 - Step 5: Solve for x
x = 1,144,789,559,028,868,480/916,960,279.20 - Step 6: Final answer
x = 1,248,461,449.20
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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.