Home / 920,438.32-1,380,048.36-440,736.88

Finding the Fourth Proportional to 920,438.32, 1,380,048.36 and 440,736.88

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Solution

The fourth proportional to 920,438.32, 1,380,048.36 and 440,736.88 is: 660,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,438.32 : 1,380,048.36 = 440,736.88 : x
  2. Step 2: Convert to fraction form
    920,438.32/1,380,048.36 = 440,736.88/x
  3. Step 3: Cross multiply
    920,438.32x = 1,380,048.36 × 440,736.88
  4. Step 4: Simplify right side
    920,438.32x = 608,238,208,435.52
  5. Step 5: Solve for x
    x = 608,238,208,435.52/920,438.32
  6. Step 6: Final answer
    x = 660,813.65

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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.