Finding the Fourth Proportional to 2,758,439.61, 3,808,424.79 and 1,778,816.70
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Solution
The fourth proportional to 2,758,439.61, 3,808,424.79 and 1,778,816.70 is: 2,455,913.70
Step by Step Solution
- Step 1: Write the proportion equation
2,758,439.61 : 3,808,424.79 = 1,778,816.70 : x - Step 2: Convert to fraction form
2,758,439.61/3,808,424.79 = 1,778,816.70/x - Step 3: Cross multiply
2,758,439.61x = 3,808,424.79 × 1,778,816.70 - Step 4: Simplify right side
2,758,439.61x = 6,774,489,617,145.99 - Step 5: Solve for x
x = 6,774,489,617,145.99/2,758,439.61 - Step 6: Final answer
x = 2,455,913.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.