Finding the Fourth Proportional to 1,655,424,021.60, 2,482,240,237.20 and 686,173,615.20
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Solution
The fourth proportional to 1,655,424,021.60, 2,482,240,237.20 and 686,173,615.20 is: 1,028,889,115.50
Step by Step Solution
- Step 1: Write the proportion equation
1,655,424,021.60 : 2,482,240,237.20 = 686,173,615.20 : x - Step 2: Convert to fraction form
1,655,424,021.60/2,482,240,237.20 = 686,173,615.20/x - Step 3: Cross multiply
1,655,424,021.60x = 2,482,240,237.20 × 686,173,615.20 - Step 4: Simplify right side
1,655,424,021.60x = 1,703,247,757,354,429,440 - Step 5: Solve for x
x = 1,703,247,757,354,429,440/1,655,424,021.60 - Step 6: Final answer
x = 1,028,889,115.50
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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.