Home / 459,789.72-690,078.24-260,306.16

Finding the Fourth Proportional to 459,789.72, 690,078.24 and 260,306.16

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Solution

The fourth proportional to 459,789.72, 690,078.24 and 260,306.16 is: 390,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,789.72 : 690,078.24 = 260,306.16 : x
  2. Step 2: Convert to fraction form
    459,789.72/690,078.24 = 260,306.16/x
  3. Step 3: Cross multiply
    459,789.72x = 690,078.24 × 260,306.16
  4. Step 4: Simplify right side
    459,789.72x = 179,631,616,753.96
  5. Step 5: Solve for x
    x = 179,631,616,753.96/459,789.72
  6. Step 6: Final answer
    x = 390,682.11

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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.