Home / 457,277.20-685,915.80-289,315.60

Finding the Fourth Proportional to 457,277.20, 685,915.80 and 289,315.60

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Solution

The fourth proportional to 457,277.20, 685,915.80 and 289,315.60 is: 433,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,277.20 : 685,915.80 = 289,315.60 : x
  2. Step 2: Convert to fraction form
    457,277.20/685,915.80 = 289,315.60/x
  3. Step 3: Cross multiply
    457,277.20x = 685,915.80 × 289,315.60
  4. Step 4: Simplify right side
    457,277.20x = 198,446,141,226.48
  5. Step 5: Solve for x
    x = 198,446,141,226.48/457,277.20
  6. Step 6: Final answer
    x = 433,973.40

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Similar ratio
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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.