Home / 648,025.20-971,908.20-311,065.20

Finding the Fourth Proportional to 648,025.20, 971,908.20 and 311,065.20

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Solution

The fourth proportional to 648,025.20, 971,908.20 and 311,065.20 is: 466,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,025.20 : 971,908.20 = 311,065.20 : x
  2. Step 2: Convert to fraction form
    648,025.20/971,908.20 = 311,065.20/x
  3. Step 3: Cross multiply
    648,025.20x = 971,908.20 × 311,065.20
  4. Step 4: Simplify right side
    648,025.20x = 302,326,818,614.64
  5. Step 5: Solve for x
    x = 302,326,818,614.64/648,025.20
  6. Step 6: Final answer
    x = 466,535.59

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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.