Home / 745,378.74-1,028,635.11-423,098.73

Finding the Fourth Proportional to 745,378.74, 1,028,635.11 and 423,098.73

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Solution

The fourth proportional to 745,378.74, 1,028,635.11 and 423,098.73 is: 583,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,378.74 : 1,028,635.11 = 423,098.73 : x
  2. Step 2: Convert to fraction form
    745,378.74/1,028,635.11 = 423,098.73/x
  3. Step 3: Cross multiply
    745,378.74x = 1,028,635.11 × 423,098.73
  4. Step 4: Simplify right side
    745,378.74x = 435,214,208,674.41
  5. Step 5: Solve for x
    x = 435,214,208,674.41/745,378.74
  6. Step 6: Final answer
    x = 583,883.31

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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.