Home / 1,457,871.40-2,186,807.10-820,142.20

Finding the Fourth Proportional to 1,457,871.40, 2,186,807.10 and 820,142.20

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Solution

The fourth proportional to 1,457,871.40, 2,186,807.10 and 820,142.20 is: 1,230,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457,871.40 : 2,186,807.10 = 820,142.20 : x
  2. Step 2: Convert to fraction form
    1,457,871.40/2,186,807.10 = 820,142.20/x
  3. Step 3: Cross multiply
    1,457,871.40x = 2,186,807.10 × 820,142.20
  4. Step 4: Simplify right side
    1,457,871.40x = 1,793,492,785,969.62
  5. Step 5: Solve for x
    x = 1,793,492,785,969.62/1,457,871.40
  6. Step 6: Final answer
    x = 1,230,213.30

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Double scale
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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.