Home / 469,928.38-648,838.18-288,883.05

Finding the Fourth Proportional to 469,928.38, 648,838.18 and 288,883.05

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Solution

The fourth proportional to 469,928.38, 648,838.18 and 288,883.05 is: 398,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,928.38 : 648,838.18 = 288,883.05 : x
  2. Step 2: Convert to fraction form
    469,928.38/648,838.18 = 288,883.05/x
  3. Step 3: Cross multiply
    469,928.38x = 648,838.18 × 288,883.05
  4. Step 4: Simplify right side
    469,928.38x = 187,438,352,394.85
  5. Step 5: Solve for x
    x = 187,438,352,394.85/469,928.38
  6. Step 6: Final answer
    x = 398,865.79

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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.