Home / 781,520.64-1,078,556.46-437,391.06

Finding the Fourth Proportional to 781,520.64, 1,078,556.46 and 437,391.06

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Solution

The fourth proportional to 781,520.64, 1,078,556.46 and 437,391.06 is: 603,632.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,520.64 : 1,078,556.46 = 437,391.06 : x
  2. Step 2: Convert to fraction form
    781,520.64/1,078,556.46 = 437,391.06/x
  3. Step 3: Cross multiply
    781,520.64x = 1,078,556.46 × 437,391.06
  4. Step 4: Simplify right side
    781,520.64x = 471,750,953,309.25
  5. Step 5: Solve for x
    x = 471,750,953,309.25/781,520.64
  6. Step 6: Final answer
    x = 603,632.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.