Home / 753,561.12-1,130,166.32-280,469.28

Finding the Fourth Proportional to 753,561.12, 1,130,166.32 and 280,469.28

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Solution

The fourth proportional to 753,561.12, 1,130,166.32 and 280,469.28 is: 420,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,561.12 : 1,130,166.32 = 280,469.28 : x
  2. Step 2: Convert to fraction form
    753,561.12/1,130,166.32 = 280,469.28/x
  3. Step 3: Cross multiply
    753,561.12x = 1,130,166.32 × 280,469.28
  4. Step 4: Simplify right side
    753,561.12x = 316,976,934,050.65
  5. Step 5: Solve for x
    x = 316,976,934,050.65/753,561.12
  6. Step 6: Final answer
    x = 420,638.65

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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.