Home / 687,230.55-948,491.93-381,405.15

Finding the Fourth Proportional to 687,230.55, 948,491.93 and 381,405.15

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Solution

The fourth proportional to 687,230.55, 948,491.93 and 381,405.15 is: 526,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,230.55 : 948,491.93 = 381,405.15 : x
  2. Step 2: Convert to fraction form
    687,230.55/948,491.93 = 381,405.15/x
  3. Step 3: Cross multiply
    687,230.55x = 948,491.93 × 381,405.15
  4. Step 4: Simplify right side
    687,230.55x = 361,759,704,928.41
  5. Step 5: Solve for x
    x = 361,759,704,928.41/687,230.55
  6. Step 6: Final answer
    x = 526,402.25

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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.