Home / 457,322.72-685,984.08-190,938.20

Finding the Fourth Proportional to 457,322.72, 685,984.08 and 190,938.20

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Solution

The fourth proportional to 457,322.72, 685,984.08 and 190,938.20 is: 286,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,322.72 : 685,984.08 = 190,938.20 : x
  2. Step 2: Convert to fraction form
    457,322.72/685,984.08 = 190,938.20/x
  3. Step 3: Cross multiply
    457,322.72x = 685,984.08 × 190,938.20
  4. Step 4: Simplify right side
    457,322.72x = 130,980,565,463.86
  5. Step 5: Solve for x
    x = 130,980,565,463.86/457,322.72
  6. Step 6: Final answer
    x = 286,407.30

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Double scale
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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.