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Finding the Fourth Proportional to 570,715.60, 856,423.32 and 255,439.12

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Solution

The fourth proportional to 570,715.60, 856,423.32 and 255,439.12 is: 383,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,715.60 : 856,423.32 = 255,439.12 : x
  2. Step 2: Convert to fraction form
    570,715.60/856,423.32 = 255,439.12/x
  3. Step 3: Cross multiply
    570,715.60x = 856,423.32 × 255,439.12
  4. Step 4: Simplify right side
    570,715.60x = 218,764,019,208.28
  5. Step 5: Solve for x
    x = 218,764,019,208.28/570,715.60
  6. Step 6: Final answer
    x = 383,315.30

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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.