Finding the Fourth Proportional to 2,128,518.79, 2,937,424.47 and 1,210,724.39
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Solution
The fourth proportional to 2,128,518.79, 2,937,424.47 and 1,210,724.39 is: 1,670,838.65
Step by Step Solution
- Step 1: Write the proportion equation
2,128,518.79 : 2,937,424.47 = 1,210,724.39 : x - Step 2: Convert to fraction form
2,128,518.79/2,937,424.47 = 1,210,724.39/x - Step 3: Cross multiply
2,128,518.79x = 2,937,424.47 × 1,210,724.39 - Step 4: Simplify right side
2,128,518.79x = 3,556,411,452,415.17 - Step 5: Solve for x
x = 3,556,411,452,415.17/2,128,518.79 - Step 6: Final answer
x = 1,670,838.65
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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.