Home / 784,749.60-1,177,999.20-430,455.60

Finding the Fourth Proportional to 784,749.60, 1,177,999.20 and 430,455.60

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Solution

The fourth proportional to 784,749.60, 1,177,999.20 and 430,455.60 is: 646,163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,749.60 : 1,177,999.20 = 430,455.60 : x
  2. Step 2: Convert to fraction form
    784,749.60/1,177,999.20 = 430,455.60/x
  3. Step 3: Cross multiply
    784,749.60x = 1,177,999.20 × 430,455.60
  4. Step 4: Simplify right side
    784,749.60x = 507,076,352,435.52
  5. Step 5: Solve for x
    x = 507,076,352,435.52/784,749.60
  6. Step 6: Final answer
    x = 646,163.25

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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.