Home / 426,004.20-639,006.30-356,020.20

Finding the Fourth Proportional to 426,004.20, 639,006.30 and 356,020.20

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Solution

The fourth proportional to 426,004.20, 639,006.30 and 356,020.20 is: 534,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,004.20 : 639,006.30 = 356,020.20 : x
  2. Step 2: Convert to fraction form
    426,004.20/639,006.30 = 356,020.20/x
  3. Step 3: Cross multiply
    426,004.20x = 639,006.30 × 356,020.20
  4. Step 4: Simplify right side
    426,004.20x = 227,499,150,727.26
  5. Step 5: Solve for x
    x = 227,499,150,727.26/426,004.20
  6. Step 6: Final answer
    x = 534,030.30

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1.5x scale

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.