Home / 759,427.20-1,139,140.80-443,721.60

Finding the Fourth Proportional to 759,427.20, 1,139,140.80 and 443,721.60

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Solution

The fourth proportional to 759,427.20, 1,139,140.80 and 443,721.60 is: 665,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,427.20 : 1,139,140.80 = 443,721.60 : x
  2. Step 2: Convert to fraction form
    759,427.20/1,139,140.80 = 443,721.60/x
  3. Step 3: Cross multiply
    759,427.20x = 1,139,140.80 × 443,721.60
  4. Step 4: Simplify right side
    759,427.20x = 505,461,378,401.28
  5. Step 5: Solve for x
    x = 505,461,378,401.28/759,427.20
  6. Step 6: Final answer
    x = 665,582.40

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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.