Finding the Fourth Proportional to 7,438,201.79, 11,152,209.09 and 3,787,865.65
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Solution
The fourth proportional to 7,438,201.79, 11,152,209.09 and 3,787,865.65 is: 5,679,204.59
Step by Step Solution
- Step 1: Write the proportion equation
7,438,201.79 : 11,152,209.09 = 3,787,865.65 : x - Step 2: Convert to fraction form
7,438,201.79/11,152,209.09 = 3,787,865.65/x - Step 3: Cross multiply
7,438,201.79x = 11,152,209.09 × 3,787,865.65 - Step 4: Simplify right side
7,438,201.79x = 42,243,069,730,407.93 - Step 5: Solve for x
x = 42,243,069,730,407.93/7,438,201.79 - Step 6: Final answer
x = 5,679,204.59
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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.