Home / 423,931.24-634,512.30-311,581.72

Finding the Fourth Proportional to 423,931.24, 634,512.30 and 311,581.72

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Solution

The fourth proportional to 423,931.24, 634,512.30 and 311,581.72 is: 466,354.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,931.24 : 634,512.30 = 311,581.72 : x
  2. Step 2: Convert to fraction form
    423,931.24/634,512.30 = 311,581.72/x
  3. Step 3: Cross multiply
    423,931.24x = 634,512.30 × 311,581.72
  4. Step 4: Simplify right side
    423,931.24x = 197,702,433,795.16
  5. Step 5: Solve for x
    x = 197,702,433,795.16/423,931.24
  6. Step 6: Final answer
    x = 466,354.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.