Home / 648,169.20-972,124.20-311,209.20

Finding the Fourth Proportional to 648,169.20, 972,124.20 and 311,209.20

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Solution

The fourth proportional to 648,169.20, 972,124.20 and 311,209.20 is: 466,751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,169.20 : 972,124.20 = 311,209.20 : x
  2. Step 2: Convert to fraction form
    648,169.20/972,124.20 = 311,209.20/x
  3. Step 3: Cross multiply
    648,169.20x = 972,124.20 × 311,209.20
  4. Step 4: Simplify right side
    648,169.20x = 302,533,994,582.64
  5. Step 5: Solve for x
    x = 302,533,994,582.64/648,169.20
  6. Step 6: Final answer
    x = 466,751.57

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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.