Home / 485,848.08-670,289.58-281,784.56

Finding the Fourth Proportional to 485,848.08, 670,289.58 and 281,784.56

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Solution

The fourth proportional to 485,848.08, 670,289.58 and 281,784.56 is: 388,757.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,848.08 : 670,289.58 = 281,784.56 : x
  2. Step 2: Convert to fraction form
    485,848.08/670,289.58 = 281,784.56/x
  3. Step 3: Cross multiply
    485,848.08x = 670,289.58 × 281,784.56
  4. Step 4: Simplify right side
    485,848.08x = 188,877,254,372.89
  5. Step 5: Solve for x
    x = 188,877,254,372.89/485,848.08
  6. Step 6: Final answer
    x = 388,757.85

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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.