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Finding the Fourth Proportional to 618,518.70, 928,134.72 and 334,209.78

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Solution

The fourth proportional to 618,518.70, 928,134.72 and 334,209.78 is: 501,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,518.70 : 928,134.72 = 334,209.78 : x
  2. Step 2: Convert to fraction form
    618,518.70/928,134.72 = 334,209.78/x
  3. Step 3: Cross multiply
    618,518.70x = 928,134.72 × 334,209.78
  4. Step 4: Simplify right side
    618,518.70x = 310,191,700,581.56
  5. Step 5: Solve for x
    x = 310,191,700,581.56/618,518.70
  6. Step 6: Final answer
    x = 501,507.39

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1.5x scale

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.