Home / 890,070.24-1,228,289.04-482,162.88

Finding the Fourth Proportional to 890,070.24, 1,228,289.04 and 482,162.88

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Solution

The fourth proportional to 890,070.24, 1,228,289.04 and 482,162.88 is: 665,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,070.24 : 1,228,289.04 = 482,162.88 : x
  2. Step 2: Convert to fraction form
    890,070.24/1,228,289.04 = 482,162.88/x
  3. Step 3: Cross multiply
    890,070.24x = 1,228,289.04 × 482,162.88
  4. Step 4: Simplify right side
    890,070.24x = 592,235,380,998.84
  5. Step 5: Solve for x
    x = 592,235,380,998.84/890,070.24
  6. Step 6: Final answer
    x = 665,380.50

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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.