Home / 747,457.20-1,119,954.60-431,362.80

Finding the Fourth Proportional to 747,457.20, 1,119,954.60 and 431,362.80

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Solution

The fourth proportional to 747,457.20, 1,119,954.60 and 431,362.80 is: 646,333.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,457.20 : 1,119,954.60 = 431,362.80 : x
  2. Step 2: Convert to fraction form
    747,457.20/1,119,954.60 = 431,362.80/x
  3. Step 3: Cross multiply
    747,457.20x = 1,119,954.60 × 431,362.80
  4. Step 4: Simplify right side
    747,457.20x = 483,106,752,128.88
  5. Step 5: Solve for x
    x = 483,106,752,128.88/747,457.20
  6. Step 6: Final answer
    x = 646,333.67

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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.