Home / 780,901.97-1,170,016.14-426,165.10

Finding the Fourth Proportional to 780,901.97, 1,170,016.14 and 426,165.10

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Solution

The fourth proportional to 780,901.97, 1,170,016.14 and 426,165.10 is: 638,518.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,901.97 : 1,170,016.14 = 426,165.10 : x
  2. Step 2: Convert to fraction form
    780,901.97/1,170,016.14 = 426,165.10/x
  3. Step 3: Cross multiply
    780,901.97x = 1,170,016.14 × 426,165.10
  4. Step 4: Simplify right side
    780,901.97x = 498,620,043,977.79
  5. Step 5: Solve for x
    x = 498,620,043,977.79/780,901.97
  6. Step 6: Final answer
    x = 638,518.11

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Double scale
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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.