Home / 1,311,133.64-1,966,697.72-412,653.90

Finding the Fourth Proportional to 1,311,133.64, 1,966,697.72 and 412,653.90

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Solution

The fourth proportional to 1,311,133.64, 1,966,697.72 and 412,653.90 is: 618,979.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,133.64 : 1,966,697.72 = 412,653.90 : x
  2. Step 2: Convert to fraction form
    1,311,133.64/1,966,697.72 = 412,653.90/x
  3. Step 3: Cross multiply
    1,311,133.64x = 1,966,697.72 × 412,653.90
  4. Step 4: Simplify right side
    1,311,133.64x = 811,565,484,279.11
  5. Step 5: Solve for x
    x = 811,565,484,279.11/1,311,133.64
  6. Step 6: Final answer
    x = 618,979.99

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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.