Home / 876,800.40-1,210,000.68-494,753.46

Finding the Fourth Proportional to 876,800.40, 1,210,000.68 and 494,753.46

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Solution

The fourth proportional to 876,800.40, 1,210,000.68 and 494,753.46 is: 682,768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,800.40 : 1,210,000.68 = 494,753.46 : x
  2. Step 2: Convert to fraction form
    876,800.40/1,210,000.68 = 494,753.46/x
  3. Step 3: Cross multiply
    876,800.40x = 1,210,000.68 × 494,753.46
  4. Step 4: Simplify right side
    876,800.40x = 598,652,023,032.35
  5. Step 5: Solve for x
    x = 598,652,023,032.35/876,800.40
  6. Step 6: Final answer
    x = 682,768.88

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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.