Home / 780,037.30-1,170,055.95-425,743.30

Finding the Fourth Proportional to 780,037.30, 1,170,055.95 and 425,743.30

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Solution

The fourth proportional to 780,037.30, 1,170,055.95 and 425,743.30 is: 638,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,037.30 : 1,170,055.95 = 425,743.30 : x
  2. Step 2: Convert to fraction form
    780,037.30/1,170,055.95 = 425,743.30/x
  3. Step 3: Cross multiply
    780,037.30x = 1,170,055.95 × 425,743.30
  4. Step 4: Simplify right side
    780,037.30x = 498,143,481,337.64
  5. Step 5: Solve for x
    x = 498,143,481,337.64/780,037.30
  6. Step 6: Final answer
    x = 638,614.95

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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.