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Finding the Fourth Proportional to 570,713.60, 856,420.32 and 255,437.12

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Solution

The fourth proportional to 570,713.60, 856,420.32 and 255,437.12 is: 383,312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,713.60 : 856,420.32 = 255,437.12 : x
  2. Step 2: Convert to fraction form
    570,713.60/856,420.32 = 255,437.12/x
  3. Step 3: Cross multiply
    570,713.60x = 856,420.32 × 255,437.12
  4. Step 4: Simplify right side
    570,713.60x = 218,761,540,050.28
  5. Step 5: Solve for x
    x = 218,761,540,050.28/570,713.60
  6. Step 6: Final answer
    x = 383,312.30

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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.