Home / 672,107.20-1,008,160.80-620,785.60

Finding the Fourth Proportional to 672,107.20, 1,008,160.80 and 620,785.60

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Solution

The fourth proportional to 672,107.20, 1,008,160.80 and 620,785.60 is: 931,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,107.20 : 1,008,160.80 = 620,785.60 : x
  2. Step 2: Convert to fraction form
    672,107.20/1,008,160.80 = 620,785.60/x
  3. Step 3: Cross multiply
    672,107.20x = 1,008,160.80 × 620,785.60
  4. Step 4: Simplify right side
    672,107.20x = 625,851,707,124.48
  5. Step 5: Solve for x
    x = 625,851,707,124.48/672,107.20
  6. Step 6: Final answer
    x = 931,178.40

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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.