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Finding the Fourth Proportional to 570,505.70, 787,350.68 and 315,856.88

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Solution

The fourth proportional to 570,505.70, 787,350.68 and 315,856.88 is: 435,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,505.70 : 787,350.68 = 315,856.88 : x
  2. Step 2: Convert to fraction form
    570,505.70/787,350.68 = 315,856.88/x
  3. Step 3: Cross multiply
    570,505.70x = 787,350.68 × 315,856.88
  4. Step 4: Simplify right side
    570,505.70x = 248,690,129,250.68
  5. Step 5: Solve for x
    x = 248,690,129,250.68/570,505.70
  6. Step 6: Final answer
    x = 435,911.73

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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.