Home / 566,056.40-781,138.12-311,404.88

Finding the Fourth Proportional to 566,056.40, 781,138.12 and 311,404.88

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Solution

The fourth proportional to 566,056.40, 781,138.12 and 311,404.88 is: 429,727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,056.40 : 781,138.12 = 311,404.88 : x
  2. Step 2: Convert to fraction form
    566,056.40/781,138.12 = 311,404.88/x
  3. Step 3: Cross multiply
    566,056.40x = 781,138.12 × 311,404.88
  4. Step 4: Simplify right side
    566,056.40x = 243,250,222,522.03
  5. Step 5: Solve for x
    x = 243,250,222,522.03/566,056.40
  6. Step 6: Final answer
    x = 429,727.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.