Finding the Fourth Proportional to 1,283,219,936.80, 1,924,829,905.20 and 465,358,919.20
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Solution
The fourth proportional to 1,283,219,936.80, 1,924,829,905.20 and 465,358,919.20 is: 698,038,378.80
Step by Step Solution
- Step 1: Write the proportion equation
1,283,219,936.80 : 1,924,829,905.20 = 465,358,919.20 : x - Step 2: Convert to fraction form
1,283,219,936.80/1,924,829,905.20 = 465,358,919.20/x - Step 3: Cross multiply
1,283,219,936.80x = 1,924,829,905.20 × 465,358,919.20 - Step 4: Simplify right side
1,283,219,936.80x = 895,736,764,327,710,464 - Step 5: Solve for x
x = 895,736,764,327,710,464/1,283,219,936.80 - Step 6: Final answer
x = 698,038,378.80
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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.