Home / 898,764.71-1,240,288.64-490,866.73

Finding the Fourth Proportional to 898,764.71, 1,240,288.64 and 490,866.73

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Solution

The fourth proportional to 898,764.71, 1,240,288.64 and 490,866.73 is: 677,392.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,764.71 : 1,240,288.64 = 490,866.73 : x
  2. Step 2: Convert to fraction form
    898,764.71/1,240,288.64 = 490,866.73/x
  3. Step 3: Cross multiply
    898,764.71x = 1,240,288.64 × 490,866.73
  4. Step 4: Simplify right side
    898,764.71x = 608,816,420,317.17
  5. Step 5: Solve for x
    x = 608,816,420,317.17/898,764.71
  6. Step 6: Final answer
    x = 677,392.44

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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.