Home / 648,156.20-972,104.70-311,196.20

Finding the Fourth Proportional to 648,156.20, 972,104.70 and 311,196.20

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Solution

The fourth proportional to 648,156.20, 972,104.70 and 311,196.20 is: 466,732.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,156.20 : 972,104.70 = 311,196.20 : x
  2. Step 2: Convert to fraction form
    648,156.20/972,104.70 = 311,196.20/x
  3. Step 3: Cross multiply
    648,156.20x = 972,104.70 × 311,196.20
  4. Step 4: Simplify right side
    648,156.20x = 302,515,288,642.14
  5. Step 5: Solve for x
    x = 302,515,288,642.14/648,156.20
  6. Step 6: Final answer
    x = 466,732.08

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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.