Finding the Fourth Proportional to 12,756,031.20, 19,127,480.40 and 3,779,416.80
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Solution
The fourth proportional to 12,756,031.20, 19,127,480.40 and 3,779,416.80 is: 5,667,179.68
Step by Step Solution
- Step 1: Write the proportion equation
12,756,031.20 : 19,127,480.40 = 3,779,416.80 : x - Step 2: Convert to fraction form
12,756,031.20/19,127,480.40 = 3,779,416.80/x - Step 3: Cross multiply
12,756,031.20x = 19,127,480.40 × 3,779,416.80 - Step 4: Simplify right side
12,756,031.20x = 72,290,720,765,430.70 - Step 5: Solve for x
x = 72,290,720,765,430.70/12,756,031.20 - Step 6: Final answer
x = 5,667,179.68
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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.