Home / 570,289.02-786,986.19-312,165.78

Finding the Fourth Proportional to 570,289.02, 786,986.19 and 312,165.78

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Solution

The fourth proportional to 570,289.02, 786,986.19 and 312,165.78 is: 430,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,289.02 : 786,986.19 = 312,165.78 : x
  2. Step 2: Convert to fraction form
    570,289.02/786,986.19 = 312,165.78/x
  3. Step 3: Cross multiply
    570,289.02x = 786,986.19 × 312,165.78
  4. Step 4: Simplify right side
    570,289.02x = 245,670,157,850.58
  5. Step 5: Solve for x
    x = 245,670,157,850.58/570,289.02
  6. Step 6: Final answer
    x = 430,781.85

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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.