Home / 687,874.56-949,309.44-458,037.76

Finding the Fourth Proportional to 687,874.56, 949,309.44 and 458,037.76

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Solution

The fourth proportional to 687,874.56, 949,309.44 and 458,037.76 is: 632,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,874.56 : 949,309.44 = 458,037.76 : x
  2. Step 2: Convert to fraction form
    687,874.56/949,309.44 = 458,037.76/x
  3. Step 3: Cross multiply
    687,874.56x = 949,309.44 × 458,037.76
  4. Step 4: Simplify right side
    687,874.56x = 434,819,569,444.45
  5. Step 5: Solve for x
    x = 434,819,569,444.45/687,874.56
  6. Step 6: Final answer
    x = 632,120.44

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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.