Home / 423,930.24-634,510.80-311,580.72

Finding the Fourth Proportional to 423,930.24, 634,510.80 and 311,580.72

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Solution

The fourth proportional to 423,930.24, 634,510.80 and 311,580.72 is: 466,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,930.24 : 634,510.80 = 311,580.72 : x
  2. Step 2: Convert to fraction form
    423,930.24/634,510.80 = 311,580.72/x
  3. Step 3: Cross multiply
    423,930.24x = 634,510.80 × 311,580.72
  4. Step 4: Simplify right side
    423,930.24x = 197,701,331,911.78
  5. Step 5: Solve for x
    x = 197,701,331,911.78/423,930.24
  6. Step 6: Final answer
    x = 466,353.45

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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.