Home / 898,764.20-1,240,287.95-490,866.23

Finding the Fourth Proportional to 898,764.20, 1,240,287.95 and 490,866.23

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Solution

The fourth proportional to 898,764.20, 1,240,287.95 and 490,866.23 is: 677,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,764.20 : 1,240,287.95 = 490,866.23 : x
  2. Step 2: Convert to fraction form
    898,764.20/1,240,287.95 = 490,866.23/x
  3. Step 3: Cross multiply
    898,764.20x = 1,240,287.95 × 490,866.23
  4. Step 4: Simplify right side
    898,764.20x = 608,815,464,721.07
  5. Step 5: Solve for x
    x = 608,815,464,721.07/898,764.20
  6. Step 6: Final answer
    x = 677,391.76

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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.