Finding the Fourth Proportional to 7,938,285.86, 11,911,365.12 and 3,145,869.02
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Solution
The fourth proportional to 7,938,285.86, 11,911,365.12 and 3,145,869.02 is: 4,720,363.46
Step by Step Solution
- Step 1: Write the proportion equation
7,938,285.86 : 11,911,365.12 = 3,145,869.02 : x - Step 2: Convert to fraction form
7,938,285.86/11,911,365.12 = 3,145,869.02/x - Step 3: Cross multiply
7,938,285.86x = 11,911,365.12 × 3,145,869.02 - Step 4: Simplify right side
7,938,285.86x = 37,471,594,516,916.58 - Step 5: Solve for x
x = 37,471,594,516,916.58/7,938,285.86 - Step 6: Final answer
x = 4,720,363.46
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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.