Home / 653,218.16-979,818.55-316,288.94

Finding the Fourth Proportional to 653,218.16, 979,818.55 and 316,288.94

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Solution

The fourth proportional to 653,218.16, 979,818.55 and 316,288.94 is: 474,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,218.16 : 979,818.55 = 316,288.94 : x
  2. Step 2: Convert to fraction form
    653,218.16/979,818.55 = 316,288.94/x
  3. Step 3: Cross multiply
    653,218.16x = 979,818.55 × 316,288.94
  4. Step 4: Simplify right side
    653,218.16x = 309,905,764,882.02
  5. Step 5: Solve for x
    x = 309,905,764,882.02/653,218.16
  6. Step 6: Final answer
    x = 474,429.20

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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.