Home / 780,062.70-1,170,094.05-638,345.10

Finding the Fourth Proportional to 780,062.70, 1,170,094.05 and 638,345.10

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Solution

The fourth proportional to 780,062.70, 1,170,094.05 and 638,345.10 is: 957,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,062.70 : 1,170,094.05 = 638,345.10 : x
  2. Step 2: Convert to fraction form
    780,062.70/1,170,094.05 = 638,345.10/x
  3. Step 3: Cross multiply
    780,062.70x = 1,170,094.05 × 638,345.10
  4. Step 4: Simplify right side
    780,062.70x = 746,923,803,356.66
  5. Step 5: Solve for x
    x = 746,923,803,356.66/780,062.70
  6. Step 6: Final answer
    x = 957,517.65

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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.