Home / 817,919.12-1,227,129.08-418,842.46

Finding the Fourth Proportional to 817,919.12, 1,227,129.08 and 418,842.46

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Solution

The fourth proportional to 817,919.12, 1,227,129.08 and 418,842.46 is: 628,391.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,919.12 : 1,227,129.08 = 418,842.46 : x
  2. Step 2: Convert to fraction form
    817,919.12/1,227,129.08 = 418,842.46/x
  3. Step 3: Cross multiply
    817,919.12x = 1,227,129.08 × 418,842.46
  4. Step 4: Simplify right side
    817,919.12x = 513,973,762,604.74
  5. Step 5: Solve for x
    x = 513,973,762,604.74/817,919.12
  6. Step 6: Final answer
    x = 628,391.92

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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.