Home / 817,723.91-1,128,337.85-490,967.89

Finding the Fourth Proportional to 817,723.91, 1,128,337.85 and 490,967.89

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Solution

The fourth proportional to 817,723.91, 1,128,337.85 and 490,967.89 is: 677,462.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,723.91 : 1,128,337.85 = 490,967.89 : x
  2. Step 2: Convert to fraction form
    817,723.91/1,128,337.85 = 490,967.89/x
  3. Step 3: Cross multiply
    817,723.91x = 1,128,337.85 × 490,967.89
  4. Step 4: Simplify right side
    817,723.91x = 553,977,651,828.21
  5. Step 5: Solve for x
    x = 553,977,651,828.21/817,723.91
  6. Step 6: Final answer
    x = 677,462.95

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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.